Merge remote-tracking branch 'origin' into feature/add-epub-css-parsing

* origin:
  fix: truncate chapter names that are too long (#422)
  feat: dict based Hyphenation (#305)
  fix: render U+FFFD replacement character instead of ? (#366)
  fix: Invert colors on home screen cover overlay when recent book is selected (#390)
  Adds KOReader Sync support (#232)
  feat: Change keyboard "caps" to "shift" & Wrap Keyboard (#377)
  fix: XTC 1-bit thumb BMP polarity inversion (#373)

.gitignore

@@ -4,3 +4,5 @@
 .vscode
 lib/EpdFont/fontsrc
 *.generated.h
+build
+**/__pycache__/

docs/hyphenation-trie-format.md

@@ -0,0 +1,66 @@
+# Hypher Binary Tries
+
+CrossPoint embeds the exact binary automata produced by
+[Typst's `hypher`](https://github.com/typst/hypher). 
+
+## File layout
+
+Each `.bin` blob is a single self-contained automaton:
+
+```
+uint32_t root_addr_be;  // big-endian offset of the root node
+uint8_t  levels[];      // shared "levels" tape (dist/score pairs)
+uint8_t  nodes[];       // node records packed back-to-back
+```
+
+The size of the `levels` tape is implicit. Individual nodes reference slices
+inside that tape via 12-bit offsets, so no additional pointers are required.
+
+### Node encoding
+
+Every node starts with a single control byte:
+
+- Bit 7 – set when the node stores scores (`levels`).
+- Bits 5-6 – stride of the target deltas (1, 2, or 3 bytes, big-endian).
+- Bits 0-4 – transition count (values ≥ 31 spill into an extra byte).
+
+If the `levels` flag is set, two more bytes follow. Together they encode a
+12-bit offset into the global `levels` tape and a 4-bit length. Each byte in the
+levels tape packs a distance/score pair as `dist * 10 + score`, where `dist`
+counts how many UTF-8 bytes we advanced since the previous digit.
+
+After the optional levels header come the transition labels (one byte per edge)
+followed by the signed target deltas. Targets are stored as relative offsets
+from the current node address. Deltas up to ±128 fit in a single byte, larger
+distances grow to 2 or 3 bytes. The runtime walks the transitions with a simple
+linear scan and materializes the absolute address by adding the decoded delta
+to the current node’s base.
+
+## Embedding blobs into the firmware
+
+The helper script `scripts/generate_hyphenation_trie.py` acts as a thin
+wrapper: it reads the hypher-generated `.bin` files, formats them as `constexpr`
+byte arrays, and emits headers under
+`lib/Epub/Epub/hyphenation/generated/`. Each header defines the raw data plus a
+`SerializedHyphenationPatterns` descriptor so the reader can keep the automaton
+in flash.
+
+To refresh the firmware assets after updating the `.bin` files, run:
+
+```
+./scripts/generate_hyphenation_trie.py \
+    --input lib/Epub/Epub/hyphenation/tries/en.bin \
+    --output lib/Epub/Epub/hyphenation/generated/hyph-en.trie.h
+
+./scripts/generate_hyphenation_trie.py \
+    --input lib/Epub/Epub/hyphenation/tries/fr.bin \
+    --output lib/Epub/Epub/hyphenation/generated/hyph-fr.trie.h
+
+./scripts/generate_hyphenation_trie.py \
+    --input lib/Epub/Epub/hyphenation/tries/de.bin \
+    --output lib/Epub/Epub/hyphenation/generated/hyph-de.trie.h
+
+./scripts/generate_hyphenation_trie.py \
+    --input lib/Epub/Epub/hyphenation/tries/ru.bin \
+    --output lib/Epub/Epub/hyphenation/generated/hyph-ru.trie.h
+```

lib/EpdFont/EpdFont.cpp

@@ -22,8 +22,7 @@ void EpdFont::getTextBounds(const char* string, const int startX, const int star
     const EpdGlyph* glyph = getGlyph(cp);
 
     if (!glyph) {
-      // TODO: Replace with fallback glyph property?
-      glyph = getGlyph('?');
+      glyph = getGlyph(REPLACEMENT_GLYPH);
     }
 
     if (!glyph) {

lib/EpdFont/builtinFonts/bookerly_12_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_12_boldBitmaps[51217] = {
+static const uint8_t bookerly_12_boldBitmaps[51367] = {
     0x0A, 0x83, 0xFC, 0x3F, 0x87, 0xF4, 0x7F, 0x43, 0xF4, 0x3F, 0x03, 0xF0, 0x3F, 0x03, 0xF0, 0x3F,
     0x03, 0xF0, 0x2F, 0x01, 0xF0, 0x00, 0x00, 0x10, 0x2F, 0xC3, 0xFC, 0x3F, 0xC0, 0x50, 0x7E, 0x1F,
     0x7F, 0x8F, 0xDF, 0xD3, 0xF3, 0xF4, 0xFC, 0xFD, 0x3F, 0x2F, 0x0F, 0xCB, 0xC3, 0xF2, 0xE0, 0xF8,
@@ -3209,7 +3209,16 @@ static const uint8_t bookerly_12_boldBitmaps[51217] = {
     0x2F, 0xFF, 0xFF, 0xFE, 0xBF, 0xFF, 0xFF, 0xFA, 0xFF, 0xFF, 0xFF, 0xE0, 0x2F, 0x47, 0xFC, 0x7F,
     0xC3, 0xF4, 0x00, 0x00, 0x1F, 0x80, 0x0B, 0xC0, 0x0B, 0xD0, 0xFF, 0x40, 0xBF, 0x80, 0x7F, 0xC3,
     0xFD, 0x02, 0xFE, 0x01, 0xFF, 0x0B, 0xE0, 0x07, 0xF0, 0x03, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00,
-    0x00,
+    0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x7F, 0x80, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x74, 0x1F, 0x80, 0x00,
+    0x00, 0x00, 0x74, 0x00, 0x78, 0x00, 0x00, 0x00, 0x7D, 0x04, 0x0B, 0x80, 0x00, 0x00, 0x7F, 0xFF,
+    0xE0, 0xF8, 0x00, 0x00, 0x7F, 0xFF, 0xFD, 0x2F, 0x80, 0x00, 0x7F, 0xFF, 0xFF, 0x87, 0xF8, 0x00,
+    0x7F, 0xFF, 0xFF, 0xE1, 0xFF, 0x80, 0x7F, 0xFF, 0xFF, 0x80, 0xBF, 0xF8, 0x2F, 0xFF, 0xF8, 0x00,
+    0x3F, 0xFE, 0x02, 0xFF, 0xFC, 0x00, 0xBF, 0xFE, 0x00, 0x2F, 0xFF, 0x42, 0xFF, 0xFE, 0x00, 0x02,
+    0xFF, 0xE2, 0xFF, 0xFE, 0x00, 0x00, 0x2F, 0xFC, 0xBF, 0xFE, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFE,
+    0x00, 0x00, 0x00, 0x2F, 0xD2, 0xFE, 0x00, 0x00, 0x00, 0x02, 0xF0, 0x3E, 0x00, 0x00, 0x00, 0x00,
+    0x2D, 0x2E, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2E, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_12_boldGlyphs[] = {
@@ -3941,6 +3950,7 @@ static const EpdGlyph bookerly_12_boldGlyphs[] = {
     { 15, 18, 25, 5, 18, 68, 51112 }, // ⊥
     { 6, 5, 16, 5, 9, 8, 51180 }, // ⋅
     { 23, 5, 25, 1, 9, 29, 51188 }, // ⋯
+    { 25, 24, 25, 0, 21, 150, 51217 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_12_boldIntervals[] = {
@@ -4004,13 +4014,14 @@ static const EpdUnicodeInterval bookerly_12_boldIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_12_bold = {
     bookerly_12_boldBitmaps,
     bookerly_12_boldGlyphs,
     bookerly_12_boldIntervals,
-    60,
+    61,
     33,
     27,
     -7,

lib/EpdFont/builtinFonts/bookerly_12_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_12_bolditalicBitmaps[52522] = {
+static const uint8_t bookerly_12_bolditalicBitmaps[52672] = {
     0x00, 0x68, 0x01, 0xFC, 0x03, 0xF8, 0x07, 0xF4, 0x07, 0xF0, 0x0B, 0xE0, 0x0F, 0xD0, 0x0F, 0xC0,
     0x0F, 0xC0, 0x0F, 0x80, 0x1F, 0x40, 0x1F, 0x00, 0x2F, 0x00, 0x2D, 0x00, 0x00, 0x00, 0x04, 0x00,
     0x7F, 0x00, 0xBF, 0x00, 0xBD, 0x00, 0x10, 0x00, 0x0B, 0x87, 0xC2, 0xF4, 0xFC, 0x3F, 0x2F, 0x83,
@@ -3290,7 +3290,16 @@ static const uint8_t bookerly_12_bolditalicBitmaps[52522] = {
     0xC0, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x2F, 0xFF, 0xFF, 0xFE, 0xBF, 0xFF, 0xFF,
     0xFA, 0xFF, 0xFF, 0xFF, 0xE0, 0x2F, 0x47, 0xFC, 0x7F, 0xC3, 0xF4, 0x00, 0x00, 0x1F, 0x80, 0x0B,
     0xC0, 0x0B, 0xD0, 0xFF, 0x40, 0xBF, 0x80, 0x7F, 0xC3, 0xFD, 0x02, 0xFE, 0x01, 0xFF, 0x0B, 0xE0,
-    0x07, 0xF0, 0x03, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x07, 0xF0, 0x03, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x80, 0x00, 0x00, 0x00, 0x00, 0x7F,
+    0xF8, 0x00, 0x00, 0x00, 0x00, 0x74, 0x1F, 0x80, 0x00, 0x00, 0x00, 0x74, 0x00, 0x78, 0x00, 0x00,
+    0x00, 0x7D, 0x04, 0x0B, 0x80, 0x00, 0x00, 0x7F, 0xFF, 0xE0, 0xF8, 0x00, 0x00, 0x7F, 0xFF, 0xFD,
+    0x2F, 0x80, 0x00, 0x7F, 0xFF, 0xFF, 0x87, 0xF8, 0x00, 0x7F, 0xFF, 0xFF, 0xE1, 0xFF, 0x80, 0x7F,
+    0xFF, 0xFF, 0x80, 0xBF, 0xF8, 0x2F, 0xFF, 0xF8, 0x00, 0x3F, 0xFE, 0x02, 0xFF, 0xFC, 0x00, 0xBF,
+    0xFE, 0x00, 0x2F, 0xFF, 0x42, 0xFF, 0xFE, 0x00, 0x02, 0xFF, 0xE2, 0xFF, 0xFE, 0x00, 0x00, 0x2F,
+    0xFC, 0xBF, 0xFE, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x2F, 0xD2, 0xFE, 0x00,
+    0x00, 0x00, 0x02, 0xF0, 0x3E, 0x00, 0x00, 0x00, 0x00, 0x2D, 0x2E, 0x00, 0x00, 0x00, 0x00, 0x02,
+    0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_12_bolditalicGlyphs[] = {
@@ -4022,6 +4031,7 @@ static const EpdGlyph bookerly_12_bolditalicGlyphs[] = {
     { 15, 18, 25, 5, 18, 68, 52417 }, // ⊥
     { 6, 5, 16, 5, 9, 8, 52485 }, // ⋅
     { 23, 5, 25, 1, 9, 29, 52493 }, // ⋯
+    { 25, 24, 25, 0, 21, 150, 52522 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_12_bolditalicIntervals[] = {
@@ -4085,13 +4095,14 @@ static const EpdUnicodeInterval bookerly_12_bolditalicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_12_bolditalic = {
     bookerly_12_bolditalicBitmaps,
     bookerly_12_bolditalicGlyphs,
     bookerly_12_bolditalicIntervals,
-    60,
+    61,
     33,
     27,
     -7,

lib/EpdFont/builtinFonts/bookerly_12_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_12_italicBitmaps[48812] = {
+static const uint8_t bookerly_12_italicBitmaps[48962] = {
     0x00, 0x14, 0x03, 0xD0, 0x1F, 0x00, 0xF8, 0x03, 0xD0, 0x0F, 0x00, 0x7C, 0x02, 0xD0, 0x0B, 0x00,
     0x3C, 0x00, 0xE0, 0x03, 0x80, 0x1D, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x1D, 0x01, 0xF8, 0x07,
     0xC0, 0x04, 0x00, 0x0A, 0x07, 0x0B, 0x87, 0xC3, 0xD2, 0xE0, 0xF0, 0xB4, 0x38, 0x3C, 0x0D, 0x0E,
@@ -3058,7 +3058,17 @@ static const uint8_t bookerly_12_italicBitmaps[48812] = {
     0x00, 0x00, 0x2E, 0x00, 0x00, 0x00, 0xB8, 0x00, 0x00, 0x02, 0xE0, 0x00, 0x00, 0x0B, 0x80, 0x00,
     0x00, 0x2E, 0x00, 0x00, 0x00, 0xB8, 0x00, 0x05, 0x56, 0xE5, 0x54, 0xBF, 0xFF, 0xFF, 0xFA, 0xFF,
     0xFF, 0xFF, 0xE0, 0x10, 0xBD, 0xFE, 0xBC, 0x04, 0x00, 0x04, 0x00, 0x05, 0x1F, 0xC0, 0x0F, 0xC0,
-    0x0B, 0xDB, 0xF0, 0x03, 0xF0, 0x03, 0xF8, 0xF4, 0x00, 0xF8, 0x00, 0x7C,
+    0x0B, 0xDB, 0xF0, 0x03, 0xF0, 0x03, 0xF8, 0xF4, 0x00, 0xF8, 0x00, 0x7C, 0x00, 0x00, 0x00, 0x40,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x80, 0x00, 0x00, 0x00,
+    0x00, 0x7F, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x74, 0x1F, 0x80, 0x00, 0x00, 0x00, 0x74, 0x00, 0x78,
+    0x00, 0x00, 0x00, 0x7D, 0x04, 0x0B, 0x80, 0x00, 0x00, 0x7F, 0xFF, 0xE0, 0xF8, 0x00, 0x00, 0x7F,
+    0xFF, 0xFD, 0x2F, 0x80, 0x00, 0x7F, 0xFF, 0xFF, 0x87, 0xF8, 0x00, 0x7F, 0xFF, 0xFF, 0xE1, 0xFF,
+    0x80, 0x7F, 0xFF, 0xFF, 0x80, 0xBF, 0xF8, 0x2F, 0xFF, 0xF8, 0x00, 0x3F, 0xFE, 0x02, 0xFF, 0xFC,
+    0x00, 0xBF, 0xFE, 0x00, 0x2F, 0xFF, 0x42, 0xFF, 0xFE, 0x00, 0x02, 0xFF, 0xE2, 0xFF, 0xFE, 0x00,
+    0x00, 0x2F, 0xFC, 0xBF, 0xFE, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x2F, 0xD2,
+    0xFE, 0x00, 0x00, 0x00, 0x02, 0xF0, 0x3E, 0x00, 0x00, 0x00, 0x00, 0x2D, 0x2E, 0x00, 0x00, 0x00,
+    0x00, 0x02, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
+    0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_12_italicGlyphs[] = {
@@ -3790,6 +3800,7 @@ static const EpdGlyph bookerly_12_italicGlyphs[] = {
     { 15, 18, 25, 5, 18, 68, 48719 }, // ⊥
     { 4, 4, 16, 6, 9, 4, 48787 }, // ⋅
     { 21, 4, 25, 2, 9, 21, 48791 }, // ⋯
+    { 25, 24, 25, 0, 21, 150, 48812 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_12_italicIntervals[] = {
@@ -3853,13 +3864,14 @@ static const EpdUnicodeInterval bookerly_12_italicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_12_italic = {
     bookerly_12_italicBitmaps,
     bookerly_12_italicGlyphs,
     bookerly_12_italicIntervals,
-    60,
+    61,
     33,
     27,
     -7,

lib/EpdFont/builtinFonts/bookerly_12_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_12_regularBitmaps[47071] = {
+static const uint8_t bookerly_12_regularBitmaps[47221] = {
     0x28, 0xBC, 0xFC, 0xF8, 0xF8, 0xF8, 0xF4, 0xF4, 0xF4, 0xF4, 0xB4, 0xB4, 0x74, 0x74, 0x00, 0x00,
     0x78, 0xFD, 0xFC, 0x10, 0x28, 0x2E, 0xE1, 0xFB, 0x47, 0xED, 0x1E, 0xB4, 0x7A, 0xD1, 0xEB, 0x03,
     0x94, 0x04, 0x00, 0x0E, 0x02, 0xC0, 0x00, 0x0D, 0x03, 0x80, 0x00, 0x1D, 0x03, 0x40, 0x00, 0x2C,
@@ -2949,7 +2949,17 @@ static const uint8_t bookerly_12_regularBitmaps[47071] = {
     0x00, 0x0B, 0x80, 0x00, 0x00, 0x2E, 0x00, 0x00, 0x00, 0xB8, 0x00, 0x00, 0x02, 0xE0, 0x00, 0x00,
     0x0B, 0x80, 0x00, 0x00, 0x2E, 0x00, 0x00, 0x00, 0xB8, 0x00, 0x05, 0x56, 0xE5, 0x54, 0xBF, 0xFF,
     0xFF, 0xFA, 0xFF, 0xFF, 0xFF, 0xE0, 0x10, 0xBD, 0xFE, 0xBC, 0x04, 0x00, 0x04, 0x00, 0x05, 0x1F,
-    0xC0, 0x0F, 0xC0, 0x0B, 0xDB, 0xF0, 0x03, 0xF0, 0x03, 0xF8, 0xF4, 0x00, 0xF8, 0x00, 0x7C,
+    0xC0, 0x0F, 0xC0, 0x0B, 0xDB, 0xF0, 0x03, 0xF0, 0x03, 0xF8, 0xF4, 0x00, 0xF8, 0x00, 0x7C, 0x00,
+    0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x80,
+    0x00, 0x00, 0x00, 0x00, 0x7F, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x74, 0x1F, 0x80, 0x00, 0x00, 0x00,
+    0x74, 0x00, 0x78, 0x00, 0x00, 0x00, 0x7D, 0x04, 0x0B, 0x80, 0x00, 0x00, 0x7F, 0xFF, 0xE0, 0xF8,
+    0x00, 0x00, 0x7F, 0xFF, 0xFD, 0x2F, 0x80, 0x00, 0x7F, 0xFF, 0xFF, 0x87, 0xF8, 0x00, 0x7F, 0xFF,
+    0xFF, 0xE1, 0xFF, 0x80, 0x7F, 0xFF, 0xFF, 0x80, 0xBF, 0xF8, 0x2F, 0xFF, 0xF8, 0x00, 0x3F, 0xFE,
+    0x02, 0xFF, 0xFC, 0x00, 0xBF, 0xFE, 0x00, 0x2F, 0xFF, 0x42, 0xFF, 0xFE, 0x00, 0x02, 0xFF, 0xE2,
+    0xFF, 0xFE, 0x00, 0x00, 0x2F, 0xFC, 0xBF, 0xFE, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFE, 0x00, 0x00,
+    0x00, 0x2F, 0xD2, 0xFE, 0x00, 0x00, 0x00, 0x02, 0xF0, 0x3E, 0x00, 0x00, 0x00, 0x00, 0x2D, 0x2E,
+    0x00, 0x00, 0x00, 0x00, 0x02, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2E, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x01, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_12_regularGlyphs[] = {
@@ -3681,6 +3691,7 @@ static const EpdGlyph bookerly_12_regularGlyphs[] = {
     { 15, 18, 25, 5, 18, 68, 46978 }, // ⊥
     { 4, 4, 16, 6, 9, 4, 47046 }, // ⋅
     { 21, 4, 25, 2, 9, 21, 47050 }, // ⋯
+    { 25, 24, 25, 0, 21, 150, 47071 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_12_regularIntervals[] = {
@@ -3744,13 +3755,14 @@ static const EpdUnicodeInterval bookerly_12_regularIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_12_regular = {
     bookerly_12_regularBitmaps,
     bookerly_12_regularGlyphs,
     bookerly_12_regularIntervals,
-    60,
+    61,
     33,
     27,
     -7,

lib/EpdFont/builtinFonts/bookerly_14_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_14_boldBitmaps[67020] = {
+static const uint8_t bookerly_14_boldBitmaps[67209] = {
     0x1A, 0x4B, 0xF8, 0xFF, 0x8F, 0xF4, 0xFF, 0x4F, 0xF0, 0xFF, 0x0F, 0xF0, 0xFF, 0x0F, 0xF0, 0xBF,
     0x0B, 0xF0, 0x7F, 0x07, 0xF0, 0x3F, 0x03, 0xF0, 0x10, 0x00, 0x00, 0x2F, 0x4B, 0xFC, 0xBF, 0xC7,
     0xFC, 0x15, 0x00, 0x2F, 0x42, 0xE7, 0xF4, 0xFF, 0xBF, 0x0F, 0xEB, 0xF0, 0xFE, 0xBF, 0x0F, 0xEB,
@@ -4196,7 +4196,19 @@ static const uint8_t bookerly_14_boldBitmaps[67020] = {
     0xFF, 0xFF, 0xFF, 0xFA, 0xFF, 0xFF, 0xFF, 0xFE, 0xBF, 0xFF, 0xFF, 0xFF, 0x80, 0x01, 0x03, 0xFC,
     0xBF, 0xEB, 0xFE, 0x3F, 0xC0, 0x00, 0x05, 0x00, 0x00, 0x40, 0x00, 0x04, 0x0F, 0xF0, 0x02, 0xFE,
     0x00, 0x3F, 0xDB, 0xFD, 0x00, 0xFF, 0xC0, 0x1F, 0xFA, 0xFF, 0x40, 0x3F, 0xF0, 0x07, 0xFE, 0x7F,
-    0xC0, 0x0B, 0xF4, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xC0, 0x0B, 0xF4, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xE0, 0x00, 0x00,
+    0x00, 0x00, 0x02, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x2E, 0x5B, 0xE0, 0x00, 0x00, 0x00, 0x02,
+    0xC0, 0x02, 0xE0, 0x00, 0x00, 0x00, 0x2E, 0x00, 0x01, 0xE0, 0x00, 0x00, 0x02, 0xFC, 0x69, 0x02,
+    0xE0, 0x00, 0x00, 0x2F, 0xFF, 0xFF, 0x03, 0xE0, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0x0F, 0xE0, 0x00,
+    0x2F, 0xFF, 0xFF, 0xFC, 0x2F, 0xE0, 0x02, 0xFF, 0xFF, 0xFF, 0xF0, 0xBF, 0xE0, 0x2F, 0xFF, 0xFF,
+    0xFF, 0x42, 0xFF, 0xE2, 0xFF, 0xFF, 0xFE, 0x40, 0x0F, 0xFF, 0xE3, 0xFF, 0xFF, 0xC0, 0x00, 0xFF,
+    0xFF, 0x03, 0xFF, 0xFF, 0x00, 0x2F, 0xFF, 0xF0, 0x03, 0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0x00, 0x03,
+    0xFF, 0xF0, 0xBF, 0xFF, 0xF0, 0x00, 0x03, 0xFF, 0xD1, 0xFF, 0xFF, 0x00, 0x00, 0x03, 0xFF, 0xFF,
+    0xFF, 0xF0, 0x00, 0x00, 0x03, 0xFF, 0xEF, 0xFF, 0x00, 0x00, 0x00, 0x03, 0xFC, 0x0F, 0xF0, 0x00,
+    0x00, 0x00, 0x03, 0xF0, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x03, 0xD2, 0xF0, 0x00, 0x00, 0x00, 0x00,
+    0x03, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_14_boldGlyphs[] = {
@@ -4928,6 +4940,7 @@ static const EpdGlyph bookerly_14_boldGlyphs[] = {
     { 17, 21, 29, 6, 21, 90, 66883 }, // ⊥
     { 6, 6, 18, 6, 11, 9, 66973 }, // ⋅
     { 25, 6, 29, 2, 11, 38, 66982 }, // ⋯
+    { 27, 28, 29, 1, 24, 189, 67020 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_14_boldIntervals[] = {
@@ -4991,13 +5004,14 @@ static const EpdUnicodeInterval bookerly_14_boldIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_14_bold = {
     bookerly_14_boldBitmaps,
     bookerly_14_boldGlyphs,
     bookerly_14_boldIntervals,
-    60,
+    61,
     38,
     31,
     -8,

lib/EpdFont/builtinFonts/bookerly_14_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_14_bolditalicBitmaps[70024] = {
+static const uint8_t bookerly_14_bolditalicBitmaps[70213] = {
     0x00, 0x1A, 0x40, 0x2F, 0xD0, 0x0F, 0xF0, 0x0B, 0xF8, 0x03, 0xFD, 0x00, 0xFF, 0x00, 0x3F, 0x80,
     0x1F, 0xD0, 0x07, 0xF0, 0x02, 0xFC, 0x00, 0xBE, 0x00, 0x3F, 0x40, 0x0F, 0xC0, 0x03, 0xF0, 0x00,
     0xF8, 0x00, 0x3D, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0xF4, 0x01, 0xFF, 0x00, 0xBF, 0x80, 0x1F,
@@ -4384,7 +4384,19 @@ static const uint8_t bookerly_14_bolditalicBitmaps[70024] = {
     0xFF, 0xFF, 0xFF, 0xFE, 0xBF, 0xFF, 0xFF, 0xFF, 0x80, 0x01, 0x03, 0xFC, 0xBF, 0xEB, 0xFE, 0x3F,
     0xC0, 0x00, 0x05, 0x00, 0x00, 0x40, 0x00, 0x04, 0x0F, 0xF0, 0x02, 0xFE, 0x00, 0x3F, 0xDB, 0xFD,
     0x00, 0xFF, 0xC0, 0x1F, 0xFA, 0xFF, 0x40, 0x3F, 0xF0, 0x07, 0xFE, 0x7F, 0xC0, 0x0B, 0xF4, 0x00,
-    0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x02, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF,
+    0xE0, 0x00, 0x00, 0x00, 0x00, 0x2E, 0x5B, 0xE0, 0x00, 0x00, 0x00, 0x02, 0xC0, 0x02, 0xE0, 0x00,
+    0x00, 0x00, 0x2E, 0x00, 0x01, 0xE0, 0x00, 0x00, 0x02, 0xFC, 0x69, 0x02, 0xE0, 0x00, 0x00, 0x2F,
+    0xFF, 0xFF, 0x03, 0xE0, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0x0F, 0xE0, 0x00, 0x2F, 0xFF, 0xFF, 0xFC,
+    0x2F, 0xE0, 0x02, 0xFF, 0xFF, 0xFF, 0xF0, 0xBF, 0xE0, 0x2F, 0xFF, 0xFF, 0xFF, 0x42, 0xFF, 0xE2,
+    0xFF, 0xFF, 0xFE, 0x40, 0x0F, 0xFF, 0xE3, 0xFF, 0xFF, 0xC0, 0x00, 0xFF, 0xFF, 0x03, 0xFF, 0xFF,
+    0x00, 0x2F, 0xFF, 0xF0, 0x03, 0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0x00, 0x03, 0xFF, 0xF0, 0xBF, 0xFF,
+    0xF0, 0x00, 0x03, 0xFF, 0xD1, 0xFF, 0xFF, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00,
+    0x03, 0xFF, 0xEF, 0xFF, 0x00, 0x00, 0x00, 0x03, 0xFC, 0x0F, 0xF0, 0x00, 0x00, 0x00, 0x03, 0xF0,
+    0x3F, 0x00, 0x00, 0x00, 0x00, 0x03, 0xD2, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x03, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_14_bolditalicGlyphs[] = {
@@ -5116,6 +5128,7 @@ static const EpdGlyph bookerly_14_bolditalicGlyphs[] = {
     { 17, 21, 29, 6, 21, 90, 69887 }, // ⊥
     { 6, 6, 18, 6, 11, 9, 69977 }, // ⋅
     { 25, 6, 29, 2, 11, 38, 69986 }, // ⋯
+    { 27, 28, 29, 1, 24, 189, 70024 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_14_bolditalicIntervals[] = {
@@ -5179,13 +5192,14 @@ static const EpdUnicodeInterval bookerly_14_bolditalicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_14_bolditalic = {
     bookerly_14_bolditalicBitmaps,
     bookerly_14_bolditalicGlyphs,
     bookerly_14_bolditalicIntervals,
-    60,
+    61,
     38,
     31,
     -8,

lib/EpdFont/builtinFonts/bookerly_14_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_14_italicBitmaps[64856] = {
+static const uint8_t bookerly_14_italicBitmaps[65045] = {
     0x00, 0x05, 0x00, 0x0F, 0x80, 0x0B, 0xD0, 0x03, 0xF0, 0x00, 0xF8, 0x00, 0x7D, 0x00, 0x2F, 0x00,
     0x0F, 0x80, 0x03, 0xD0, 0x00, 0xF0, 0x00, 0x7C, 0x00, 0x1E, 0x00, 0x0B, 0x40, 0x02, 0xC0, 0x00,
     0xF0, 0x00, 0x3C, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBC, 0x00, 0x3F, 0x40, 0x0F,
@@ -4061,7 +4061,19 @@ static const uint8_t bookerly_14_italicBitmaps[64856] = {
     0xFC, 0x00, 0x06, 0xAA, 0xBF, 0xAA, 0xA6, 0xFF, 0xFF, 0xFF, 0xFE, 0xBF, 0xFF, 0xFF, 0xFF, 0x80,
     0x0A, 0x43, 0xFC, 0x3F, 0xC2, 0xF8, 0x00, 0x00, 0x0A, 0x00, 0x01, 0xA0, 0x00, 0x29, 0x0F, 0xF0,
     0x01, 0xFD, 0x00, 0x2F, 0xC3, 0xFC, 0x00, 0xBF, 0x80, 0x0F, 0xF0, 0xFD, 0x00, 0x0F, 0xC0, 0x01,
-    0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x02, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF,
+    0xE0, 0x00, 0x00, 0x00, 0x00, 0x2E, 0x5B, 0xE0, 0x00, 0x00, 0x00, 0x02, 0xC0, 0x02, 0xE0, 0x00,
+    0x00, 0x00, 0x2E, 0x00, 0x01, 0xE0, 0x00, 0x00, 0x02, 0xFC, 0x69, 0x02, 0xE0, 0x00, 0x00, 0x2F,
+    0xFF, 0xFF, 0x03, 0xE0, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0x0F, 0xE0, 0x00, 0x2F, 0xFF, 0xFF, 0xFC,
+    0x2F, 0xE0, 0x02, 0xFF, 0xFF, 0xFF, 0xF0, 0xBF, 0xE0, 0x2F, 0xFF, 0xFF, 0xFF, 0x42, 0xFF, 0xE2,
+    0xFF, 0xFF, 0xFE, 0x40, 0x0F, 0xFF, 0xE3, 0xFF, 0xFF, 0xC0, 0x00, 0xFF, 0xFF, 0x03, 0xFF, 0xFF,
+    0x00, 0x2F, 0xFF, 0xF0, 0x03, 0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0x00, 0x03, 0xFF, 0xF0, 0xBF, 0xFF,
+    0xF0, 0x00, 0x03, 0xFF, 0xD1, 0xFF, 0xFF, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00,
+    0x03, 0xFF, 0xEF, 0xFF, 0x00, 0x00, 0x00, 0x03, 0xFC, 0x0F, 0xF0, 0x00, 0x00, 0x00, 0x03, 0xF0,
+    0x3F, 0x00, 0x00, 0x00, 0x00, 0x03, 0xD2, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x03, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_14_italicGlyphs[] = {
@@ -4793,6 +4805,7 @@ static const EpdGlyph bookerly_14_italicGlyphs[] = {
     { 17, 21, 29, 6, 21, 90, 64726 }, // ⊥
     { 6, 5, 18, 6, 10, 8, 64816 }, // ⋅
     { 25, 5, 29, 2, 10, 32, 64824 }, // ⋯
+    { 27, 28, 29, 1, 24, 189, 64856 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_14_italicIntervals[] = {
@@ -4856,13 +4869,14 @@ static const EpdUnicodeInterval bookerly_14_italicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_14_italic = {
     bookerly_14_italicBitmaps,
     bookerly_14_italicGlyphs,
     bookerly_14_italicIntervals,
-    60,
+    61,
     38,
     31,
     -8,

lib/EpdFont/builtinFonts/bookerly_14_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_14_regularBitmaps[62675] = {
+static const uint8_t bookerly_14_regularBitmaps[62864] = {
     0x1A, 0x1F, 0xCB, 0xE2, 0xF4, 0xBD, 0x2F, 0x4B, 0xC2, 0xF0, 0xBC, 0x2F, 0x07, 0xC1, 0xF0, 0x7C,
     0x0F, 0x03, 0xC0, 0xF0, 0x00, 0x00, 0x00, 0x40, 0xFC, 0xBF, 0x5F, 0xC1, 0x40, 0x18, 0x06, 0x1F,
     0x07, 0xCB, 0xC2, 0xF1, 0xF0, 0xBC, 0x7C, 0x1F, 0x1F, 0x07, 0xC7, 0xC1, 0xF1, 0xF0, 0x7C, 0x34,
@@ -3925,7 +3925,18 @@ static const uint8_t bookerly_14_regularBitmaps[62675] = {
     0xAA, 0xA6, 0xFF, 0xFF, 0xFF, 0xFE, 0xBF, 0xFF, 0xFF, 0xFF, 0x80, 0x0A, 0x43, 0xFC, 0x3F, 0xC2,
     0xF8, 0x00, 0x00, 0x0A, 0x00, 0x01, 0xA0, 0x00, 0x29, 0x0F, 0xF0, 0x01, 0xFD, 0x00, 0x2F, 0xC3,
     0xFC, 0x00, 0xBF, 0x80, 0x0F, 0xF0, 0xFD, 0x00, 0x0F, 0xC0, 0x01, 0xF8, 0x00, 0x00, 0x00, 0x00,
-    0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xE0, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x2F, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00,
+    0x2E, 0x5B, 0xE0, 0x00, 0x00, 0x00, 0x02, 0xC0, 0x02, 0xE0, 0x00, 0x00, 0x00, 0x2E, 0x00, 0x01,
+    0xE0, 0x00, 0x00, 0x02, 0xFC, 0x69, 0x02, 0xE0, 0x00, 0x00, 0x2F, 0xFF, 0xFF, 0x03, 0xE0, 0x00,
+    0x02, 0xFF, 0xFF, 0xFF, 0x0F, 0xE0, 0x00, 0x2F, 0xFF, 0xFF, 0xFC, 0x2F, 0xE0, 0x02, 0xFF, 0xFF,
+    0xFF, 0xF0, 0xBF, 0xE0, 0x2F, 0xFF, 0xFF, 0xFF, 0x42, 0xFF, 0xE2, 0xFF, 0xFF, 0xFE, 0x40, 0x0F,
+    0xFF, 0xE3, 0xFF, 0xFF, 0xC0, 0x00, 0xFF, 0xFF, 0x03, 0xFF, 0xFF, 0x00, 0x2F, 0xFF, 0xF0, 0x03,
+    0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0x00, 0x03, 0xFF, 0xF0, 0xBF, 0xFF, 0xF0, 0x00, 0x03, 0xFF, 0xD1,
+    0xFF, 0xFF, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x03, 0xFF, 0xEF, 0xFF, 0x00,
+    0x00, 0x00, 0x03, 0xFC, 0x0F, 0xF0, 0x00, 0x00, 0x00, 0x03, 0xF0, 0x3F, 0x00, 0x00, 0x00, 0x00,
+    0x03, 0xD2, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xF0,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_14_regularGlyphs[] = {
@@ -4657,6 +4668,7 @@ static const EpdGlyph bookerly_14_regularGlyphs[] = {
     { 17, 21, 29, 6, 21, 90, 62545 }, // ⊥
     { 6, 5, 18, 6, 10, 8, 62635 }, // ⋅
     { 25, 5, 29, 2, 10, 32, 62643 }, // ⋯
+    { 27, 28, 29, 1, 24, 189, 62675 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_14_regularIntervals[] = {
@@ -4720,13 +4732,14 @@ static const EpdUnicodeInterval bookerly_14_regularIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_14_regular = {
     bookerly_14_regularBitmaps,
     bookerly_14_regularGlyphs,
     bookerly_14_regularIntervals,
-    60,
+    61,
     38,
     31,
     -8,

lib/EpdFont/builtinFonts/bookerly_16_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_16_boldBitmaps[85154] = {
+static const uint8_t bookerly_16_boldBitmaps[85402] = {
     0x0A, 0x90, 0xFF, 0x87, 0xFE, 0x2F, 0xF4, 0xBF, 0xC2, 0xFF, 0x0B, 0xFC, 0x2F, 0xF0, 0xBF, 0xC2,
     0xFF, 0x0B, 0xFC, 0x1F, 0xF0, 0x7F, 0xC0, 0xFE, 0x03, 0xF8, 0x0F, 0xE0, 0x3F, 0xC0, 0xBF, 0x01,
     0x40, 0x00, 0x00, 0x05, 0x40, 0xFF, 0xC7, 0xFF, 0x1F, 0xFC, 0x3F, 0xF0, 0x19, 0x00, 0x0A, 0x80,
@@ -5330,7 +5330,22 @@ static const uint8_t bookerly_16_boldBitmaps[85154] = {
     0x2F, 0xFC, 0x7F, 0xE0, 0x15, 0x00, 0x0A, 0x90, 0x00, 0x2A, 0x40, 0x00, 0xA9, 0x0F, 0xFC, 0x00,
     0x3F, 0xF0, 0x00, 0xFF, 0xC7, 0xFF, 0x40, 0x1F, 0xFD, 0x00, 0x7F, 0xF5, 0xFF, 0xD0, 0x07, 0xFF,
     0x40, 0x1F, 0xFD, 0x3F, 0xF0, 0x00, 0xFF, 0xC0, 0x03, 0xFF, 0x01, 0x50, 0x00, 0x05, 0x40, 0x00,
-    0x15, 0x00,
+    0x15, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFC, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xEF, 0xFC, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xF0, 0x01, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0xBC, 0x00, 0x00,
+    0x00, 0x00, 0xFC, 0x00, 0x00, 0xBC, 0x00, 0x00, 0x00, 0x0F, 0xF9, 0xBE, 0x40, 0xFC, 0x00, 0x00,
+    0x00, 0xFF, 0xFF, 0xFF, 0x81, 0xFC, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x43, 0xFC, 0x00, 0x00,
+    0xFF, 0xFF, 0xFF, 0xFE, 0x0F, 0xFC, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFC, 0x2F, 0xFC, 0x00, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xD0, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF, 0xFF, 0xE4, 0x03, 0xFF, 0xFC, 0x7F, 0xFF,
+    0xFF, 0xD0, 0x00, 0x2F, 0xFF, 0xF4, 0x7F, 0xFF, 0xFE, 0x00, 0x02, 0xFF, 0xFF, 0x40, 0x7F, 0xFF,
+    0xF8, 0x00, 0x7F, 0xFF, 0xF4, 0x00, 0x7F, 0xFF, 0xE0, 0x2F, 0xFF, 0xFF, 0x40, 0x00, 0x7F, 0xFF,
+    0xC2, 0xFF, 0xFF, 0xF4, 0x00, 0x00, 0x7F, 0xFF, 0x07, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x7F, 0xFE,
+    0x7F, 0xFF, 0xF4, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xF4,
+    0x7F, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x80, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x03,
+    0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7D, 0x2F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xF4,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x74, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_16_boldGlyphs[] = {
@@ -6062,6 +6077,7 @@ static const EpdGlyph bookerly_16_boldGlyphs[] = {
     { 19, 23, 33, 7, 23, 110, 84989 }, // ⊥
     { 7, 6, 21, 7, 12, 11, 85099 }, // ⋅
     { 29, 6, 33, 2, 12, 44, 85110 }, // ⋯
+    { 31, 32, 33, 1, 28, 248, 85154 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_16_boldIntervals[] = {
@@ -6125,13 +6141,14 @@ static const EpdUnicodeInterval bookerly_16_boldIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_16_bold = {
     bookerly_16_boldBitmaps,
     bookerly_16_boldGlyphs,
     bookerly_16_boldIntervals,
-    60,
+    61,
     44,
     36,
     -9,

lib/EpdFont/builtinFonts/bookerly_16_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_16_bolditalicBitmaps[88512] = {
+static const uint8_t bookerly_16_bolditalicBitmaps[88760] = {
     0x00, 0x06, 0xA0, 0x00, 0xBF, 0xC0, 0x07, 0xFD, 0x00, 0x3F, 0xF0, 0x00, 0xFF, 0x80, 0x07, 0xFD,
     0x00, 0x1F, 0xF0, 0x00, 0xBF, 0x80, 0x03, 0xFD, 0x00, 0x0F, 0xF0, 0x00, 0x3F, 0xC0, 0x00, 0xFE,
     0x00, 0x07, 0xF4, 0x00, 0x1F, 0xC0, 0x00, 0xBF, 0x00, 0x02, 0xF8, 0x00, 0x0B, 0xD0, 0x00, 0x3F,
@@ -5540,6 +5540,22 @@ static const uint8_t bookerly_16_bolditalicBitmaps[88512] = {
     0x7F, 0xE0, 0x15, 0x00, 0x0A, 0x90, 0x00, 0x2A, 0x40, 0x00, 0xA9, 0x0F, 0xFC, 0x00, 0x3F, 0xF0,
     0x00, 0xFF, 0xC7, 0xFF, 0x40, 0x1F, 0xFD, 0x00, 0x7F, 0xF5, 0xFF, 0xD0, 0x07, 0xFF, 0x40, 0x1F,
     0xFD, 0x3F, 0xF0, 0x00, 0xFF, 0xC0, 0x03, 0xFF, 0x01, 0x50, 0x00, 0x05, 0x40, 0x00, 0x15, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFC, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xEF, 0xFC, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xF0, 0x01, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0xBC, 0x00, 0x00, 0x00, 0x00,
+    0xFC, 0x00, 0x00, 0xBC, 0x00, 0x00, 0x00, 0x0F, 0xF9, 0xBE, 0x40, 0xFC, 0x00, 0x00, 0x00, 0xFF,
+    0xFF, 0xFF, 0x81, 0xFC, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x43, 0xFC, 0x00, 0x00, 0xFF, 0xFF,
+    0xFF, 0xFE, 0x0F, 0xFC, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFC, 0x2F, 0xFC, 0x00, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xD0, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF, 0xFF, 0xE4, 0x03, 0xFF, 0xFC, 0x7F, 0xFF, 0xFF, 0xD0,
+    0x00, 0x2F, 0xFF, 0xF4, 0x7F, 0xFF, 0xFE, 0x00, 0x02, 0xFF, 0xFF, 0x40, 0x7F, 0xFF, 0xF8, 0x00,
+    0x7F, 0xFF, 0xF4, 0x00, 0x7F, 0xFF, 0xE0, 0x2F, 0xFF, 0xFF, 0x40, 0x00, 0x7F, 0xFF, 0xC2, 0xFF,
+    0xFF, 0xF4, 0x00, 0x00, 0x7F, 0xFF, 0x07, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x7F, 0xFE, 0x7F, 0xFF,
+    0xF4, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xF4, 0x7F, 0xF4,
+    0x00, 0x00, 0x00, 0x00, 0x7F, 0x80, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x03, 0xF4, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x7D, 0x2F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xF4, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x7F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x74, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_16_bolditalicGlyphs[] = {
@@ -6271,6 +6287,7 @@ static const EpdGlyph bookerly_16_bolditalicGlyphs[] = {
     { 19, 23, 33, 7, 23, 110, 88347 }, // ⊥
     { 7, 6, 21, 7, 12, 11, 88457 }, // ⋅
     { 29, 6, 33, 2, 12, 44, 88468 }, // ⋯
+    { 31, 32, 33, 1, 28, 248, 88512 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_16_bolditalicIntervals[] = {
@@ -6334,13 +6351,14 @@ static const EpdUnicodeInterval bookerly_16_bolditalicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_16_bolditalic = {
     bookerly_16_bolditalicBitmaps,
     bookerly_16_bolditalicGlyphs,
     bookerly_16_bolditalicIntervals,
-    60,
+    61,
     44,
     36,
     -9,

lib/EpdFont/builtinFonts/bookerly_16_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_16_italicBitmaps[82412] = {
+static const uint8_t bookerly_16_italicBitmaps[82660] = {
     0x00, 0x01, 0x40, 0x00, 0xFC, 0x00, 0x3F, 0x80, 0x03, 0xF0, 0x00, 0x7F, 0x00, 0x0B, 0xE0, 0x00,
     0xFC, 0x00, 0x0F, 0xC0, 0x00, 0xF8, 0x00, 0x1F, 0x40, 0x02, 0xF0, 0x00, 0x2F, 0x00, 0x03, 0xE0,
     0x00, 0x3D, 0x00, 0x03, 0xC0, 0x00, 0x7C, 0x00, 0x07, 0x80, 0x00, 0x74, 0x00, 0x0A, 0x00, 0x00,
@@ -5158,7 +5158,23 @@ static const uint8_t bookerly_16_italicBitmaps[82412] = {
     0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x01, 0xFC, 0x3F, 0xE3, 0xFE,
     0x2F, 0xC0, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBD, 0x00, 0x03, 0xF0, 0x00, 0x0B,
     0xDB, 0xFC, 0x00, 0x2F, 0xF0, 0x00, 0xBF, 0xFF, 0xF0, 0x00, 0xFF, 0xC0, 0x03, 0xFF, 0x7F, 0x40,
-    0x01, 0xFD, 0x00, 0x07, 0xF4, 0x10, 0x00, 0x00, 0x40, 0x00, 0x01, 0x00,
+    0x01, 0xFD, 0x00, 0x07, 0xF4, 0x10, 0x00, 0x00, 0x40, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFC,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xEF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x01, 0xFC,
+    0x00, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0xBC, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x00, 0xBC,
+    0x00, 0x00, 0x00, 0x0F, 0xF9, 0xBE, 0x40, 0xFC, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x81, 0xFC,
+    0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x43, 0xFC, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFE, 0x0F, 0xFC,
+    0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFC, 0x2F, 0xFC, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xD0, 0xFF, 0xFC,
+    0x0F, 0xFF, 0xFF, 0xFF, 0xE4, 0x03, 0xFF, 0xFC, 0x7F, 0xFF, 0xFF, 0xD0, 0x00, 0x2F, 0xFF, 0xF4,
+    0x7F, 0xFF, 0xFE, 0x00, 0x02, 0xFF, 0xFF, 0x40, 0x7F, 0xFF, 0xF8, 0x00, 0x7F, 0xFF, 0xF4, 0x00,
+    0x7F, 0xFF, 0xE0, 0x2F, 0xFF, 0xFF, 0x40, 0x00, 0x7F, 0xFF, 0xC2, 0xFF, 0xFF, 0xF4, 0x00, 0x00,
+    0x7F, 0xFF, 0x07, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x7F, 0xFE, 0x7F, 0xFF, 0xF4, 0x00, 0x00, 0x00,
+    0x7F, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xF4, 0x7F, 0xF4, 0x00, 0x00, 0x00, 0x00,
+    0x7F, 0x80, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x03, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x7D, 0x2F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x7F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x74, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_16_italicGlyphs[] = {
@@ -5890,6 +5906,7 @@ static const EpdGlyph bookerly_16_italicGlyphs[] = {
     { 19, 23, 33, 7, 23, 110, 82252 }, // ⊥
     { 6, 6, 21, 7, 12, 9, 82362 }, // ⋅
     { 27, 6, 33, 3, 12, 41, 82371 }, // ⋯
+    { 31, 32, 33, 1, 28, 248, 82412 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_16_italicIntervals[] = {
@@ -5953,13 +5970,14 @@ static const EpdUnicodeInterval bookerly_16_italicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_16_italic = {
     bookerly_16_italicBitmaps,
     bookerly_16_italicGlyphs,
     bookerly_16_italicIntervals,
-    60,
+    61,
     44,
     36,
     -9,

lib/EpdFont/builtinFonts/bookerly_16_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_16_regularBitmaps[79871] = {
+static const uint8_t bookerly_16_regularBitmaps[80119] = {
     0x0A, 0x83, 0xF8, 0x3F, 0x47, 0xF4, 0x7F, 0x07, 0xF0, 0x7F, 0x07, 0xF0, 0x3F, 0x03, 0xF0, 0x3F,
     0x03, 0xF0, 0x3F, 0x03, 0xF0, 0x3F, 0x03, 0xF0, 0x2F, 0x02, 0xF0, 0x04, 0x00, 0x00, 0x00, 0x01,
     0xA4, 0x3F, 0xC3, 0xFC, 0x3F, 0xC0, 0x50, 0x05, 0x01, 0x93, 0xE0, 0x7D, 0x7E, 0x0B, 0xD7, 0xE0,
@@ -4999,7 +4999,23 @@ static const uint8_t bookerly_16_regularBitmaps[79871] = {
     0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x01, 0xFC,
     0x3F, 0xE3, 0xFE, 0x2F, 0xC0, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBD, 0x00, 0x03,
     0xF0, 0x00, 0x0B, 0xDB, 0xFC, 0x00, 0x2F, 0xF0, 0x00, 0xBF, 0xFF, 0xF0, 0x00, 0xFF, 0xC0, 0x03,
-    0xFF, 0x7F, 0x40, 0x01, 0xFD, 0x00, 0x07, 0xF4, 0x10, 0x00, 0x00, 0x40, 0x00, 0x01, 0x00,
+    0xFF, 0x7F, 0x40, 0x01, 0xFD, 0x00, 0x07, 0xF4, 0x10, 0x00, 0x00, 0x40, 0x00, 0x01, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xEF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xF0, 0x01, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0xBC, 0x00, 0x00, 0x00, 0x00, 0xFC,
+    0x00, 0x00, 0xBC, 0x00, 0x00, 0x00, 0x0F, 0xF9, 0xBE, 0x40, 0xFC, 0x00, 0x00, 0x00, 0xFF, 0xFF,
+    0xFF, 0x81, 0xFC, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x43, 0xFC, 0x00, 0x00, 0xFF, 0xFF, 0xFF,
+    0xFE, 0x0F, 0xFC, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFC, 0x2F, 0xFC, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xD0, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF, 0xFF, 0xE4, 0x03, 0xFF, 0xFC, 0x7F, 0xFF, 0xFF, 0xD0, 0x00,
+    0x2F, 0xFF, 0xF4, 0x7F, 0xFF, 0xFE, 0x00, 0x02, 0xFF, 0xFF, 0x40, 0x7F, 0xFF, 0xF8, 0x00, 0x7F,
+    0xFF, 0xF4, 0x00, 0x7F, 0xFF, 0xE0, 0x2F, 0xFF, 0xFF, 0x40, 0x00, 0x7F, 0xFF, 0xC2, 0xFF, 0xFF,
+    0xF4, 0x00, 0x00, 0x7F, 0xFF, 0x07, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x7F, 0xFE, 0x7F, 0xFF, 0xF4,
+    0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xF4, 0x7F, 0xF4, 0x00,
+    0x00, 0x00, 0x00, 0x7F, 0x80, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x03, 0xF4, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x7D, 0x2F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xF4, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x7F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x74, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_16_regularGlyphs[] = {
@@ -5731,6 +5747,7 @@ static const EpdGlyph bookerly_16_regularGlyphs[] = {
     { 19, 23, 33, 7, 23, 110, 79711 }, // ⊥
     { 6, 6, 21, 7, 12, 9, 79821 }, // ⋅
     { 27, 6, 33, 3, 12, 41, 79830 }, // ⋯
+    { 31, 32, 33, 1, 28, 248, 79871 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_16_regularIntervals[] = {
@@ -5794,13 +5811,14 @@ static const EpdUnicodeInterval bookerly_16_regularIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_16_regular = {
     bookerly_16_regularBitmaps,
     bookerly_16_regularGlyphs,
     bookerly_16_regularIntervals,
-    60,
+    61,
     44,
     36,
     -9,

lib/EpdFont/builtinFonts/bookerly_18_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_18_boldBitmaps[112410] = {
+static const uint8_t bookerly_18_boldBitmaps[112734] = {
     0x01, 0x54, 0x1F, 0xFC, 0x3F, 0xF8, 0x3F, 0xF8, 0x7F, 0xF4, 0x7F, 0xF4, 0x7F, 0xF0, 0x7F, 0xF0,
     0x7F, 0xF0, 0x7F, 0xF0, 0x3F, 0xF0, 0x3F, 0xF0, 0x3F, 0xF0, 0x3F, 0xF0, 0x3F, 0xF0, 0x3F, 0xF0,
     0x2F, 0xF0, 0x2F, 0xF0, 0x1F, 0xF0, 0x1F, 0xF0, 0x0F, 0xF0, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -7033,7 +7033,27 @@ static const uint8_t bookerly_18_boldBitmaps[112410] = {
     0x00, 0x00, 0x54, 0x00, 0x00, 0x54, 0x01, 0xFF, 0xC0, 0x00, 0xBF, 0xF0, 0x00, 0x3F, 0xF4, 0x3F,
     0xFE, 0x00, 0x0F, 0xFF, 0x40, 0x0B, 0xFF, 0xC3, 0xFF, 0xF0, 0x01, 0xFF, 0xF4, 0x00, 0xBF, 0xFC,
     0x3F, 0xFE, 0x00, 0x1F, 0xFF, 0x00, 0x0B, 0xFF, 0xC1, 0xFF, 0xC0, 0x00, 0xFF, 0xE0, 0x00, 0x3F,
-    0xF4, 0x01, 0x50, 0x00, 0x01, 0x50, 0x00, 0x00, 0x54, 0x00,
+    0xF4, 0x01, 0x50, 0x00, 0x01, 0x50, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xBE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x0B, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xFF, 0xF8, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xBE, 0x56, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xE0, 0x00, 0x2F, 0x80,
+    0x00, 0x00, 0x00, 0x00, 0x0B, 0xC0, 0x00, 0x07, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xC0, 0x00,
+    0x01, 0xF8, 0x00, 0x00, 0x00, 0x00, 0xBF, 0xD1, 0xA9, 0x00, 0xBE, 0x00, 0x00, 0x00, 0x02, 0xFF,
+    0xFF, 0xFF, 0xD0, 0x3F, 0x80, 0x00, 0x00, 0x0B, 0xFF, 0xFF, 0xFF, 0xF0, 0x2F, 0xE0, 0x00, 0x00,
+    0x2F, 0xFF, 0xFF, 0xFF, 0xF8, 0x1F, 0xF8, 0x00, 0x00, 0xBF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFE,
+    0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFF, 0x80, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4,
+    0x1F, 0xFF, 0xE0, 0x2F, 0xFF, 0xFF, 0xFF, 0xFE, 0x40, 0x1F, 0xFF, 0xF8, 0x7F, 0xFF, 0xFF, 0xFF,
+    0x80, 0x00, 0x3F, 0xFF, 0xFD, 0x1F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0xFF, 0xFF, 0xF4, 0x07, 0xFF,
+    0xFF, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xD0, 0x01, 0xFF, 0xFF, 0xF8, 0x00, 0xBF, 0xFF, 0xFF, 0x40,
+    0x00, 0x7F, 0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x1F, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF,
+    0xF4, 0x00, 0x00, 0x07, 0xFF, 0xFD, 0x0F, 0xFF, 0xFF, 0xD0, 0x00, 0x00, 0x01, 0xFF, 0xFE, 0x1F,
+    0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x1F,
+    0xFF, 0xEB, 0xFF, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0x00, 0xFF, 0xD0, 0x00, 0x00, 0x00,
+    0x00, 0x01, 0xFE, 0x00, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x00, 0xFD, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x1F, 0x97, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD0,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x7D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_18_boldGlyphs[] = {
@@ -7765,6 +7785,7 @@ static const EpdGlyph bookerly_18_boldGlyphs[] = {
     { 22, 27, 38, 8, 27, 149, 112187 }, // ⊥
     { 8, 7, 24, 8, 14, 14, 112336 }, // ⋅
     { 34, 7, 38, 2, 14, 60, 112350 }, // ⋯
+    { 36, 36, 38, 1, 32, 324, 112410 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_18_boldIntervals[] = {
@@ -7828,13 +7849,14 @@ static const EpdUnicodeInterval bookerly_18_boldIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_18_bold = {
     bookerly_18_boldBitmaps,
     bookerly_18_boldGlyphs,
     bookerly_18_boldIntervals,
-    60,
+    61,
     49,
     40,
     -10,

lib/EpdFont/builtinFonts/bookerly_18_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_18_bolditalicBitmaps[115736] = {
+static const uint8_t bookerly_18_bolditalicBitmaps[116060] = {
     0x00, 0x00, 0x54, 0x00, 0x07, 0xFE, 0x00, 0x0F, 0xFC, 0x00, 0x2F, 0xFC, 0x00, 0x3F, 0xF4, 0x00,
     0x7F, 0xF0, 0x00, 0xBF, 0xF0, 0x00, 0xFF, 0xD0, 0x00, 0xFF, 0xC0, 0x00, 0xFF, 0xC0, 0x01, 0xFF,
     0x80, 0x01, 0xFF, 0x40, 0x02, 0xFF, 0x00, 0x02, 0xFE, 0x00, 0x03, 0xFD, 0x00, 0x03, 0xFC, 0x00,
@@ -7241,7 +7241,27 @@ static const uint8_t bookerly_18_bolditalicBitmaps[115736] = {
     0x54, 0x00, 0x00, 0x54, 0x01, 0xFF, 0xC0, 0x00, 0xBF, 0xF0, 0x00, 0x3F, 0xF4, 0x3F, 0xFE, 0x00,
     0x0F, 0xFF, 0x40, 0x0B, 0xFF, 0xC3, 0xFF, 0xF0, 0x01, 0xFF, 0xF4, 0x00, 0xBF, 0xFC, 0x3F, 0xFE,
     0x00, 0x1F, 0xFF, 0x00, 0x0B, 0xFF, 0xC1, 0xFF, 0xC0, 0x00, 0xFF, 0xE0, 0x00, 0x3F, 0xF4, 0x01,
-    0x50, 0x00, 0x01, 0x50, 0x00, 0x00, 0x54, 0x00,
+    0x50, 0x00, 0x01, 0x50, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0B,
+    0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xBE, 0x56, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xE0, 0x00, 0x2F, 0x80, 0x00, 0x00,
+    0x00, 0x00, 0x0B, 0xC0, 0x00, 0x07, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xC0, 0x00, 0x01, 0xF8,
+    0x00, 0x00, 0x00, 0x00, 0xBF, 0xD1, 0xA9, 0x00, 0xBE, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFF,
+    0xD0, 0x3F, 0x80, 0x00, 0x00, 0x0B, 0xFF, 0xFF, 0xFF, 0xF0, 0x2F, 0xE0, 0x00, 0x00, 0x2F, 0xFF,
+    0xFF, 0xFF, 0xF8, 0x1F, 0xF8, 0x00, 0x00, 0xBF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFE, 0x00, 0x02,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFF, 0x80, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4, 0x1F, 0xFF,
+    0xE0, 0x2F, 0xFF, 0xFF, 0xFF, 0xFE, 0x40, 0x1F, 0xFF, 0xF8, 0x7F, 0xFF, 0xFF, 0xFF, 0x80, 0x00,
+    0x3F, 0xFF, 0xFD, 0x1F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0xFF, 0xFF, 0xF4, 0x07, 0xFF, 0xFF, 0xF8,
+    0x00, 0x07, 0xFF, 0xFF, 0xD0, 0x01, 0xFF, 0xFF, 0xF8, 0x00, 0xBF, 0xFF, 0xFF, 0x40, 0x00, 0x7F,
+    0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x1F, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF, 0xF4, 0x00,
+    0x00, 0x07, 0xFF, 0xFD, 0x0F, 0xFF, 0xFF, 0xD0, 0x00, 0x00, 0x01, 0xFF, 0xFE, 0x1F, 0xFF, 0xFF,
+    0x40, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xEB,
+    0xFF, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0x00, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x01,
+    0xFE, 0x00, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x1F, 0x97, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD0, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7D, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_18_bolditalicGlyphs[] = {
@@ -7973,6 +7993,7 @@ static const EpdGlyph bookerly_18_bolditalicGlyphs[] = {
     { 22, 27, 38, 8, 27, 149, 115513 }, // ⊥
     { 8, 7, 24, 8, 14, 14, 115662 }, // ⋅
     { 34, 7, 38, 2, 14, 60, 115676 }, // ⋯
+    { 36, 36, 38, 1, 32, 324, 115736 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_18_bolditalicIntervals[] = {
@@ -8036,13 +8057,14 @@ static const EpdUnicodeInterval bookerly_18_bolditalicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_18_bolditalic = {
     bookerly_18_bolditalicBitmaps,
     bookerly_18_bolditalicGlyphs,
     bookerly_18_bolditalicIntervals,
-    60,
+    61,
     49,
     40,
     -10,

lib/EpdFont/builtinFonts/bookerly_18_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_18_italicBitmaps[108017] = {
+static const uint8_t bookerly_18_italicBitmaps[108341] = {
     0x00, 0x00, 0x00, 0x00, 0xBE, 0x00, 0x2F, 0xD0, 0x03, 0xFC, 0x00, 0x7F, 0x80, 0x0B, 0xF0, 0x00,
     0xFF, 0x00, 0x0F, 0xE0, 0x00, 0xFC, 0x00, 0x1F, 0xC0, 0x02, 0xF8, 0x00, 0x2F, 0x40, 0x03, 0xF0,
     0x00, 0x3F, 0x00, 0x03, 0xE0, 0x00, 0x7D, 0x00, 0x07, 0xC0, 0x00, 0xBC, 0x00, 0x0F, 0x80, 0x00,
@@ -6759,7 +6759,27 @@ static const uint8_t bookerly_18_italicBitmaps[108017] = {
     0x50, 0x0A, 0x80, 0x00, 0x02, 0x90, 0x00, 0x01, 0xA0, 0x3F, 0xF0, 0x00, 0x1F, 0xF4, 0x00, 0x0B,
     0xFC, 0x7F, 0xF0, 0x00, 0x2F, 0xF8, 0x00, 0x0F, 0xFD, 0x7F, 0xF0, 0x00, 0x2F, 0xF8, 0x00, 0x0F,
     0xFD, 0x3F, 0xD0, 0x00, 0x0F, 0xF0, 0x00, 0x07, 0xF8, 0x05, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00,
-    0x40,
+    0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
+    0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0B, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x2F, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0x56, 0xFE, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x02, 0xE0, 0x00, 0x2F, 0x80, 0x00, 0x00, 0x00, 0x00, 0x0B, 0xC0, 0x00, 0x07, 0xE0,
+    0x00, 0x00, 0x00, 0x00, 0x2F, 0xC0, 0x00, 0x01, 0xF8, 0x00, 0x00, 0x00, 0x00, 0xBF, 0xD1, 0xA9,
+    0x00, 0xBE, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xD0, 0x3F, 0x80, 0x00, 0x00, 0x0B, 0xFF,
+    0xFF, 0xFF, 0xF0, 0x2F, 0xE0, 0x00, 0x00, 0x2F, 0xFF, 0xFF, 0xFF, 0xF8, 0x1F, 0xF8, 0x00, 0x00,
+    0xBF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFE, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFF,
+    0x80, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4, 0x1F, 0xFF, 0xE0, 0x2F, 0xFF, 0xFF, 0xFF, 0xFE, 0x40,
+    0x1F, 0xFF, 0xF8, 0x7F, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x3F, 0xFF, 0xFD, 0x1F, 0xFF, 0xFF, 0xF8,
+    0x00, 0x00, 0xFF, 0xFF, 0xF4, 0x07, 0xFF, 0xFF, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xD0, 0x01, 0xFF,
+    0xFF, 0xF8, 0x00, 0xBF, 0xFF, 0xFF, 0x40, 0x00, 0x7F, 0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0xFD, 0x00,
+    0x00, 0x1F, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF, 0xF4, 0x00, 0x00, 0x07, 0xFF, 0xFD, 0x0F, 0xFF, 0xFF,
+    0xD0, 0x00, 0x00, 0x01, 0xFF, 0xFE, 0x1F, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF,
+    0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xEB, 0xFF, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x07,
+    0xFF, 0x00, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFE, 0x00, 0xFF, 0x40, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x7F, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x97, 0xF4, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0x40,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x14, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_18_italicGlyphs[] = {
@@ -7491,6 +7511,7 @@ static const EpdGlyph bookerly_18_italicGlyphs[] = {
     { 22, 27, 38, 8, 27, 149, 107811 }, // ⊥
     { 6, 6, 24, 9, 13, 9, 107960 }, // ⋅
     { 32, 6, 38, 3, 13, 48, 107969 }, // ⋯
+    { 36, 36, 38, 1, 32, 324, 108017 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_18_italicIntervals[] = {
@@ -7554,13 +7575,14 @@ static const EpdUnicodeInterval bookerly_18_italicIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_18_italic = {
     bookerly_18_italicBitmaps,
     bookerly_18_italicGlyphs,
     bookerly_18_italicIntervals,
-    60,
+    61,
     49,
     40,
     -10,

lib/EpdFont/builtinFonts/bookerly_18_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t bookerly_18_regularBitmaps[105210] = {
+static const uint8_t bookerly_18_regularBitmaps[105534] = {
     0x05, 0x43, 0xF8, 0xBF, 0x4F, 0xF4, 0xFF, 0x0F, 0xF0, 0xFF, 0x0F, 0xF0, 0xFF, 0x0F, 0xF0, 0xFE,
     0x0F, 0xE0, 0xBE, 0x0B, 0xE0, 0xBE, 0x0B, 0xE0, 0x7E, 0x07, 0xE0, 0x7E, 0x03, 0xE0, 0x3E, 0x01,
     0x00, 0x00, 0x00, 0x00, 0x04, 0x03, 0xFC, 0xBF, 0xCF, 0xFC, 0xBF, 0xC1, 0x90, 0x00, 0x00, 0x00,
@@ -6583,7 +6583,27 @@ static const uint8_t bookerly_18_regularBitmaps[105210] = {
     0xF0, 0x1A, 0x47, 0xFC, 0xFF, 0xDF, 0xFD, 0x7F, 0xC0, 0x50, 0x0A, 0x80, 0x00, 0x02, 0x90, 0x00,
     0x01, 0xA0, 0x3F, 0xF0, 0x00, 0x1F, 0xF4, 0x00, 0x0B, 0xFC, 0x7F, 0xF0, 0x00, 0x2F, 0xF8, 0x00,
     0x0F, 0xFD, 0x7F, 0xF0, 0x00, 0x2F, 0xF8, 0x00, 0x0F, 0xFD, 0x3F, 0xD0, 0x00, 0x0F, 0xF0, 0x00,
-    0x07, 0xF8, 0x05, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x40,
+    0x07, 0xF8, 0x05, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xBE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x0B, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xFF, 0xF8, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xBE, 0x56, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xE0, 0x00, 0x2F, 0x80,
+    0x00, 0x00, 0x00, 0x00, 0x0B, 0xC0, 0x00, 0x07, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x2F, 0xC0, 0x00,
+    0x01, 0xF8, 0x00, 0x00, 0x00, 0x00, 0xBF, 0xD1, 0xA9, 0x00, 0xBE, 0x00, 0x00, 0x00, 0x02, 0xFF,
+    0xFF, 0xFF, 0xD0, 0x3F, 0x80, 0x00, 0x00, 0x0B, 0xFF, 0xFF, 0xFF, 0xF0, 0x2F, 0xE0, 0x00, 0x00,
+    0x2F, 0xFF, 0xFF, 0xFF, 0xF8, 0x1F, 0xF8, 0x00, 0x00, 0xBF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFE,
+    0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0F, 0xFF, 0x80, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4,
+    0x1F, 0xFF, 0xE0, 0x2F, 0xFF, 0xFF, 0xFF, 0xFE, 0x40, 0x1F, 0xFF, 0xF8, 0x7F, 0xFF, 0xFF, 0xFF,
+    0x80, 0x00, 0x3F, 0xFF, 0xFD, 0x1F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0xFF, 0xFF, 0xF4, 0x07, 0xFF,
+    0xFF, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xD0, 0x01, 0xFF, 0xFF, 0xF8, 0x00, 0xBF, 0xFF, 0xFF, 0x40,
+    0x00, 0x7F, 0xFF, 0xFC, 0x0B, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x1F, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF,
+    0xF4, 0x00, 0x00, 0x07, 0xFF, 0xFD, 0x0F, 0xFF, 0xFF, 0xD0, 0x00, 0x00, 0x01, 0xFF, 0xFE, 0x1F,
+    0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x1F,
+    0xFF, 0xEB, 0xFF, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0x00, 0xFF, 0xD0, 0x00, 0x00, 0x00,
+    0x00, 0x01, 0xFE, 0x00, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x00, 0xFD, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x1F, 0x97, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD0,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x7D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph bookerly_18_regularGlyphs[] = {
@@ -7315,6 +7335,7 @@ static const EpdGlyph bookerly_18_regularGlyphs[] = {
     { 22, 27, 38, 8, 27, 149, 105004 }, // ⊥
     { 6, 6, 24, 9, 13, 9, 105153 }, // ⋅
     { 32, 6, 38, 3, 13, 48, 105162 }, // ⋯
+    { 36, 36, 38, 1, 32, 324, 105210 }, // <20>
 };
 
 static const EpdUnicodeInterval bookerly_18_regularIntervals[] = {
@@ -7378,13 +7399,14 @@ static const EpdUnicodeInterval bookerly_18_regularIntervals[] = {
     { 0x22A5, 0x22A5, 0x2D5 },
     { 0x22C5, 0x22C5, 0x2D6 },
     { 0x22EF, 0x22EF, 0x2D7 },
+    { 0xFFFD, 0xFFFD, 0x2D8 },
 };
 
 static const EpdFontData bookerly_18_regular = {
     bookerly_18_regularBitmaps,
     bookerly_18_regularGlyphs,
     bookerly_18_regularIntervals,
-    60,
+    61,
     49,
     40,
     -10,

lib/EpdFont/builtinFonts/notosans_12_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_12_boldBitmaps[49639] = {
+static const uint8_t notosans_12_boldBitmaps[49772] = {
     0x7F, 0xAF, 0xE7, 0xF9, 0xFD, 0x7F, 0x5F, 0xD7, 0xF4, 0xFD, 0x3F, 0x0F, 0xC3, 0xF0, 0xFC, 0x00,
     0x00, 0x02, 0xE2, 0xFE, 0xBF, 0x9F, 0xD0, 0x40, 0x7F, 0x0F, 0xD7, 0xF0, 0xFD, 0x7F, 0x0F, 0xC3,
     0xF0, 0xFC, 0x3F, 0x0F, 0xC3, 0xE0, 0xBC, 0x29, 0x06, 0x80, 0x00, 0x0F, 0x43, 0xD0, 0x00, 0x1F,
@@ -3110,7 +3110,15 @@ static const uint8_t notosans_12_boldBitmaps[49639] = {
     0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00, 0xBF, 0x40, 0x00, 0x7F,
     0xC0, 0x14, 0x3F, 0xFF, 0xF8, 0x0F, 0xFF, 0xF8, 0x02, 0xFF, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0xFF, 0xFF, 0xFC, 0xFF, 0xFF, 0xFC, 0x55, 0x55, 0x54, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF,
-    0xDF, 0xFF, 0xFF, 0xF5, 0xAA, 0xAA, 0xA8,
+    0xDF, 0xFF, 0xFF, 0xF5, 0xAA, 0xAA, 0xA8, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F,
+    0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0x00, 0x00, 0x00, 0x03,
+    0xFF, 0xFF, 0x00, 0x00, 0x00, 0x3D, 0x00, 0x2F, 0x00, 0x00, 0x03, 0xE0, 0x00, 0x2F, 0x00, 0x00,
+    0x3F, 0xC6, 0xD0, 0x7F, 0x00, 0x03, 0xFF, 0xFF, 0xC1, 0xFF, 0x00, 0x3F, 0xFF, 0xFE, 0x07, 0xFF,
+    0x03, 0xFF, 0xFF, 0xE0, 0x3F, 0xFF, 0x2F, 0xFF, 0xFE, 0x03, 0xFF, 0xFE, 0x3F, 0xFF, 0xF0, 0x3F,
+    0xFF, 0xF0, 0x3F, 0xFF, 0x82, 0xFF, 0xFF, 0x00, 0x3F, 0xFF, 0x5F, 0xFF, 0xF0, 0x00, 0x3F, 0xFF,
+    0xFF, 0xFF, 0x00, 0x00, 0x3F, 0xF5, 0xFF, 0xF0, 0x00, 0x00, 0x3F, 0x41, 0xFF, 0x00, 0x00, 0x00,
+    0x3D, 0x07, 0xF0, 0x00, 0x00, 0x00, 0x3E, 0xBF, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF0, 0x00, 0x00,
+    0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_12_boldGlyphs[] = {
@@ -3948,6 +3956,7 @@ static const EpdGlyph notosans_12_boldGlyphs[] = {
     { 12, 24, 14, 2, 21, 72, 49497 }, // ₿
     { 12, 19, 13, 1, 14, 57, 49569 }, // ⃀
     { 13, 4, 15, 1, 11, 13, 49626 }, // −
+    { 23, 23, 25, 1, 19, 133, 49639 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_12_boldIntervals[] = {
@@ -3962,13 +3971,14 @@ static const EpdUnicodeInterval notosans_12_boldIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_12_bold = {
     notosans_12_boldBitmaps,
     notosans_12_boldGlyphs,
     notosans_12_boldIntervals,
-    11,
+    12,
     34,
     27,
     -8,

lib/EpdFont/builtinFonts/notosans_12_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_12_bolditalicBitmaps[52863] = {
+static const uint8_t notosans_12_bolditalicBitmaps[52996] = {
     0x01, 0xFE, 0x02, 0xFE, 0x02, 0xFD, 0x03, 0xFC, 0x03, 0xFC, 0x03, 0xF8, 0x07, 0xF4, 0x0B, 0xF0,
     0x0B, 0xF0, 0x0F, 0xE0, 0x0F, 0xD0, 0x0F, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x2F, 0x00, 0x7F, 0x80,
     0xBF, 0x80, 0x7F, 0x00, 0x04, 0x00, 0x2F, 0x4B, 0xD3, 0xF4, 0xFD, 0x3F, 0x0F, 0xC3, 0xE0, 0xF8,
@@ -3311,7 +3311,16 @@ static const uint8_t notosans_12_bolditalicBitmaps[52863] = {
     0xFC, 0x0F, 0xE0, 0x3F, 0x82, 0xFD, 0x03, 0xFF, 0xFF, 0x40, 0x7F, 0xFF, 0x80, 0x0B, 0xFF, 0xFD,
     0x00, 0xFF, 0x1F, 0xF0, 0x0F, 0xE0, 0x7F, 0x80, 0xFD, 0x03, 0xF8, 0x1F, 0xC0, 0x7F, 0x42, 0xFC,
     0x1F, 0xF0, 0x3F, 0xFF, 0xFE, 0x03, 0xFF, 0xFF, 0x80, 0x3F, 0xFF, 0x90, 0x00, 0x34, 0xF0, 0x00,
-    0x07, 0x0E, 0x00, 0x00, 0x50, 0x40, 0x00, 0x05, 0x54, 0x3F, 0xFD, 0x7F, 0xFC, 0x7F, 0xFC,
+    0x07, 0x0E, 0x00, 0x00, 0x50, 0x40, 0x00, 0x05, 0x54, 0x3F, 0xFD, 0x7F, 0xFC, 0x7F, 0xFC, 0x00,
+    0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00, 0x00,
+    0x00, 0x00, 0x3F, 0xFF, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x3D, 0x00, 0x2F,
+    0x00, 0x00, 0x03, 0xE0, 0x00, 0x2F, 0x00, 0x00, 0x3F, 0xC6, 0xD0, 0x7F, 0x00, 0x03, 0xFF, 0xFF,
+    0xC1, 0xFF, 0x00, 0x3F, 0xFF, 0xFE, 0x07, 0xFF, 0x03, 0xFF, 0xFF, 0xE0, 0x3F, 0xFF, 0x2F, 0xFF,
+    0xFE, 0x03, 0xFF, 0xFE, 0x3F, 0xFF, 0xF0, 0x3F, 0xFF, 0xF0, 0x3F, 0xFF, 0x82, 0xFF, 0xFF, 0x00,
+    0x3F, 0xFF, 0x5F, 0xFF, 0xF0, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x3F, 0xF5, 0xFF, 0xF0,
+    0x00, 0x00, 0x3F, 0x41, 0xFF, 0x00, 0x00, 0x00, 0x3D, 0x07, 0xF0, 0x00, 0x00, 0x00, 0x3E, 0xBF,
+    0x00, 0x00, 0x00, 0x00, 0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x20, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_12_bolditalicGlyphs[] = {
@@ -4148,6 +4157,7 @@ static const EpdGlyph notosans_12_bolditalicGlyphs[] = {
     { 18, 21, 15, -1, 21, 95, 52676 }, // ₾
     { 14, 24, 14, 0, 21, 84, 52771 }, // ₿
     { 8, 4, 8, 0, 9, 8, 52855 }, // −
+    { 23, 23, 25, 1, 19, 133, 52863 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_12_bolditalicIntervals[] = {
@@ -4162,13 +4172,14 @@ static const EpdUnicodeInterval notosans_12_bolditalicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_12_bolditalic = {
     notosans_12_bolditalicBitmaps,
     notosans_12_bolditalicGlyphs,
     notosans_12_bolditalicIntervals,
-    11,
+    12,
     34,
     27,
     -8,

lib/EpdFont/builtinFonts/notosans_12_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_12_italicBitmaps[48397] = {
+static const uint8_t notosans_12_italicBitmaps[48530] = {
     0x00, 0xB8, 0x03, 0xE0, 0x0F, 0x40, 0x7C, 0x02, 0xF0, 0x0F, 0x80, 0x3D, 0x00, 0xF0, 0x07, 0xC0,
     0x1E, 0x00, 0xB4, 0x03, 0xC0, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x40, 0x7E, 0x01, 0xF4, 0x01,
     0x00, 0x00, 0x1E, 0x0F, 0x0B, 0x87, 0xC2, 0xD1, 0xE0, 0xF0, 0xB4, 0x38, 0x2C, 0x0D, 0x0E, 0x02,
@@ -3032,7 +3032,16 @@ static const uint8_t notosans_12_italicBitmaps[48397] = {
     0x0F, 0x00, 0x2E, 0x07, 0xC0, 0x0B, 0x82, 0xE0, 0x07, 0xC0, 0xF9, 0x5B, 0xD0, 0x3F, 0xFF, 0x80,
     0x0F, 0xAB, 0xF4, 0x07, 0xC0, 0x1F, 0x02, 0xE0, 0x03, 0xD0, 0xF4, 0x00, 0xF8, 0x3C, 0x00, 0x3D,
     0x0F, 0x00, 0x1F, 0x07, 0xC0, 0x1F, 0x82, 0xFF, 0xFF, 0x80, 0xFF, 0xFE, 0x40, 0x03, 0x8B, 0x00,
-    0x00, 0xD3, 0x80, 0x00, 0x10, 0x40, 0x00, 0x2A, 0xA8, 0xFF, 0xE1, 0x55, 0x00,
+    0x00, 0xD3, 0x80, 0x00, 0x10, 0x40, 0x00, 0x2A, 0xA8, 0xFF, 0xE1, 0x55, 0x00, 0x00, 0x00, 0x03,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00, 0x00, 0x00, 0x00,
+    0x3F, 0xFF, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x3D, 0x00, 0x2F, 0x00, 0x00,
+    0x03, 0xE0, 0x00, 0x2F, 0x00, 0x00, 0x3F, 0xC6, 0xD0, 0x7F, 0x00, 0x03, 0xFF, 0xFF, 0xC1, 0xFF,
+    0x00, 0x3F, 0xFF, 0xFE, 0x07, 0xFF, 0x03, 0xFF, 0xFF, 0xE0, 0x3F, 0xFF, 0x2F, 0xFF, 0xFE, 0x03,
+    0xFF, 0xFE, 0x3F, 0xFF, 0xF0, 0x3F, 0xFF, 0xF0, 0x3F, 0xFF, 0x82, 0xFF, 0xFF, 0x00, 0x3F, 0xFF,
+    0x5F, 0xFF, 0xF0, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x3F, 0xF5, 0xFF, 0xF0, 0x00, 0x00,
+    0x3F, 0x41, 0xFF, 0x00, 0x00, 0x00, 0x3D, 0x07, 0xF0, 0x00, 0x00, 0x00, 0x3E, 0xBF, 0x00, 0x00,
+    0x00, 0x00, 0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00,
+    0x00, 0x00,
 };
 
 static const EpdGlyph notosans_12_italicGlyphs[] = {
@@ -3869,6 +3878,7 @@ static const EpdGlyph notosans_12_italicGlyphs[] = {
     { 17, 21, 15, -1, 21, 90, 48223 }, // ₾
     { 13, 24, 14, 1, 21, 78, 48313 }, // ₿
     { 7, 3, 8, 0, 8, 6, 48391 }, // −
+    { 23, 23, 25, 1, 19, 133, 48397 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_12_italicIntervals[] = {
@@ -3883,13 +3893,14 @@ static const EpdUnicodeInterval notosans_12_italicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_12_italic = {
     notosans_12_italicBitmaps,
     notosans_12_italicGlyphs,
     notosans_12_italicIntervals,
-    11,
+    12,
     34,
     27,
     -8,

lib/EpdFont/builtinFonts/notosans_12_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_12_regularBitmaps[45168] = {
+static const uint8_t notosans_12_regularBitmaps[45301] = {
     0x3E, 0x3E, 0x3E, 0x3E, 0x3D, 0x2D, 0x2D, 0x2D, 0x2D, 0x2C, 0x1C, 0x1C, 0x1C, 0x00, 0x00, 0x3E,
     0x3F, 0x3E, 0x04, 0x7C, 0x2D, 0x7C, 0x2D, 0x3C, 0x2D, 0x38, 0x2D, 0x38, 0x1C, 0x38, 0x1C, 0x24,
     0x08, 0x00, 0x0B, 0x01, 0xC0, 0x00, 0x0E, 0x02, 0xC0, 0x00, 0x0E, 0x03, 0xC0, 0x00, 0x1D, 0x03,
@@ -2831,6 +2831,15 @@ static const uint8_t notosans_12_regularBitmaps[45168] = {
     0x95, 0x93, 0xE0, 0x00, 0x7C, 0x00, 0x0B, 0x80, 0x00, 0xF8, 0x00, 0x0F, 0x40, 0x00, 0xB8, 0x00,
     0x0B, 0x80, 0x00, 0x7C, 0x00, 0x03, 0xF0, 0x00, 0x0F, 0xEA, 0xF0, 0x2F, 0xFE, 0x00, 0x00, 0x00,
     0x00, 0x00, 0xBF, 0xFF, 0xF6, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00,
+    0x00, 0x00, 0x00, 0x3F, 0xFF, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x3D, 0x00,
+    0x2F, 0x00, 0x00, 0x03, 0xE0, 0x00, 0x2F, 0x00, 0x00, 0x3F, 0xC6, 0xD0, 0x7F, 0x00, 0x03, 0xFF,
+    0xFF, 0xC1, 0xFF, 0x00, 0x3F, 0xFF, 0xFE, 0x07, 0xFF, 0x03, 0xFF, 0xFF, 0xE0, 0x3F, 0xFF, 0x2F,
+    0xFF, 0xFE, 0x03, 0xFF, 0xFE, 0x3F, 0xFF, 0xF0, 0x3F, 0xFF, 0xF0, 0x3F, 0xFF, 0x82, 0xFF, 0xFF,
+    0x00, 0x3F, 0xFF, 0x5F, 0xFF, 0xF0, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x3F, 0xF5, 0xFF,
+    0xF0, 0x00, 0x00, 0x3F, 0x41, 0xFF, 0x00, 0x00, 0x00, 0x3D, 0x07, 0xF0, 0x00, 0x00, 0x00, 0x3E,
+    0xBF, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x20, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_12_regularGlyphs[] = {
@@ -3668,6 +3677,7 @@ static const EpdGlyph notosans_12_regularGlyphs[] = {
     { 12, 24, 14, 2, 21, 72, 45042 }, // ₿
     { 10, 18, 12, 1, 14, 45, 45114 }, // ⃀
     { 12, 3, 14, 1, 10, 9, 45159 }, // −
+    { 23, 23, 25, 1, 19, 133, 45168 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_12_regularIntervals[] = {
@@ -3682,13 +3692,14 @@ static const EpdUnicodeInterval notosans_12_regularIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_12_regular = {
     notosans_12_regularBitmaps,
     notosans_12_regularGlyphs,
     notosans_12_regularIntervals,
-    11,
+    12,
     34,
     27,
     -8,

lib/EpdFont/builtinFonts/notosans_14_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_14_boldBitmaps[67224] = {
+static const uint8_t notosans_14_boldBitmaps[67413] = {
     0x7F, 0xD7, 0xFE, 0x3F, 0xD3, 0xFD, 0x3F, 0xD3, 0xFD, 0x3F, 0xD3, 0xFC, 0x3F, 0xC3, 0xFC, 0x3F,
     0xC3, 0xFC, 0x2F, 0xC2, 0xFC, 0x00, 0x00, 0x00, 0x05, 0x03, 0xFD, 0x7F, 0xE7, 0xFE, 0x3F, 0xC0,
     0x50, 0x3F, 0xC3, 0xFC, 0x3F, 0xC3, 0xFC, 0x3F, 0xC3, 0xFC, 0x3F, 0x82, 0xFC, 0x3F, 0x82, 0xFC,
@@ -4209,7 +4209,19 @@ static const uint8_t notosans_14_boldBitmaps[67224] = {
     0x00, 0x00, 0x7F, 0xE0, 0x00, 0x03, 0xFF, 0x95, 0xB8, 0x1F, 0xFF, 0xFF, 0x80, 0x7F, 0xFF, 0xF8,
     0x00, 0xBF, 0xFE, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x06, 0xAA, 0xAA, 0xA8, 0xBF, 0xFF,
     0xFF, 0xCB, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0xBF, 0xFF, 0xFF, 0xF6, 0xFF, 0xFF, 0xFF,
-    0xEB, 0xFF, 0xFF, 0xFF, 0x85, 0x55, 0x55, 0x54,
+    0xEB, 0xFF, 0xFF, 0xFF, 0x85, 0x55, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+    0xD0, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xD0, 0x00,
+    0x00, 0x00, 0x0F, 0xE9, 0x6F, 0xD0, 0x00, 0x00, 0x00, 0xF4, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0x0F,
+    0xC0, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0xFF, 0x86, 0xE0, 0x2F, 0xD0, 0x00, 0x0F, 0xFF, 0xFF, 0xC0,
+    0x7F, 0xD0, 0x00, 0xFF, 0xFF, 0xFF, 0x02, 0xFF, 0xD0, 0x0F, 0xFF, 0xFF, 0xF4, 0x0F, 0xFF, 0xD0,
+    0xFF, 0xFF, 0xFF, 0x40, 0xBF, 0xFF, 0xD7, 0xFF, 0xFF, 0xF4, 0x0B, 0xFF, 0xFF, 0x87, 0xFF, 0xFF,
+    0x80, 0xFF, 0xFF, 0xF8, 0x07, 0xFF, 0xFE, 0x07, 0xFF, 0xFF, 0x80, 0x07, 0xFF, 0xF8, 0x2F, 0xFF,
+    0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00,
+    0x07, 0xFD, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x07, 0xF0, 0x0F, 0xF8, 0x00, 0x00, 0x00, 0x07, 0xD0,
+    0x3F, 0x80, 0x00, 0x00, 0x00, 0x07, 0xD7, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0x80, 0x00,
+    0x00, 0x00, 0x00, 0x07, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x80, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x04, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_14_boldGlyphs[] = {
@@ -5047,6 +5059,7 @@ static const EpdGlyph notosans_14_boldGlyphs[] = {
     { 14, 27, 17, 2, 24, 95, 67033 }, // ₿
     { 14, 23, 15, 1, 17, 81, 67128 }, // ⃀
     { 15, 4, 17, 1, 12, 15, 67209 }, // −
+    { 27, 28, 29, 1, 23, 189, 67224 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_14_boldIntervals[] = {
@@ -5061,13 +5074,14 @@ static const EpdUnicodeInterval notosans_14_boldIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_14_bold = {
     notosans_14_boldBitmaps,
     notosans_14_boldGlyphs,
     notosans_14_boldIntervals,
-    11,
+    12,
     40,
     32,
     -9,

lib/EpdFont/builtinFonts/notosans_14_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_14_bolditalicBitmaps[71405] = {
+static const uint8_t notosans_14_bolditalicBitmaps[71594] = {
     0x00, 0xBF, 0xC0, 0x0F, 0xFC, 0x00, 0xFF, 0x80, 0x0F, 0xF4, 0x01, 0xFF, 0x00, 0x2F, 0xF0, 0x02,
     0xFE, 0x00, 0x3F, 0xD0, 0x03, 0xFC, 0x00, 0x3F, 0xC0, 0x07, 0xF8, 0x00, 0xBF, 0x40, 0x0F, 0xF0,
     0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x03, 0xFC, 0x00, 0xBF, 0xD0, 0x0B,
@@ -4470,7 +4470,19 @@ static const uint8_t notosans_14_bolditalicBitmaps[71405] = {
     0x00, 0x1F, 0xE0, 0x7F, 0xD0, 0x0B, 0xF4, 0x0F, 0xF8, 0x03, 0xFC, 0x03, 0xFE, 0x00, 0xFF, 0x00,
     0xFF, 0x80, 0x7F, 0xC0, 0xBF, 0xD0, 0x1F, 0xFA, 0xFF, 0xF0, 0x0B, 0xFF, 0xFF, 0xF4, 0x03, 0xFF,
     0xFF, 0xF4, 0x00, 0xFF, 0xFF, 0xD0, 0x00, 0x03, 0xC3, 0xC0, 0x00, 0x00, 0xF0, 0xF0, 0x00, 0x00,
-    0x38, 0x38, 0x00, 0x00, 0x2A, 0xAA, 0x4F, 0xFF, 0xE3, 0xFF, 0xF5, 0xFF, 0xFC,
+    0x38, 0x38, 0x00, 0x00, 0x2A, 0xAA, 0x4F, 0xFF, 0xE3, 0xFF, 0xF5, 0xFF, 0xFC, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xD0, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xD0, 0x00, 0x00, 0x00,
+    0x00, 0xFF, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x0F, 0xE9, 0x6F, 0xD0, 0x00, 0x00, 0x00, 0xF4, 0x00,
+    0x0F, 0xD0, 0x00, 0x00, 0x0F, 0xC0, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0xFF, 0x86, 0xE0, 0x2F, 0xD0,
+    0x00, 0x0F, 0xFF, 0xFF, 0xC0, 0x7F, 0xD0, 0x00, 0xFF, 0xFF, 0xFF, 0x02, 0xFF, 0xD0, 0x0F, 0xFF,
+    0xFF, 0xF4, 0x0F, 0xFF, 0xD0, 0xFF, 0xFF, 0xFF, 0x40, 0xBF, 0xFF, 0xD7, 0xFF, 0xFF, 0xF4, 0x0B,
+    0xFF, 0xFF, 0x87, 0xFF, 0xFF, 0x80, 0xFF, 0xFF, 0xF8, 0x07, 0xFF, 0xFE, 0x07, 0xFF, 0xFF, 0x80,
+    0x07, 0xFF, 0xF8, 0x2F, 0xFF, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x07, 0xFF,
+    0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x07, 0xFD, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x07, 0xF0, 0x0F, 0xF8,
+    0x00, 0x00, 0x00, 0x07, 0xD0, 0x3F, 0x80, 0x00, 0x00, 0x00, 0x07, 0xD7, 0xF8, 0x00, 0x00, 0x00,
+    0x00, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x07, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07,
+    0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_14_bolditalicGlyphs[] = {
@@ -5307,6 +5319,7 @@ static const EpdGlyph notosans_14_bolditalicGlyphs[] = {
     { 20, 24, 18, -1, 24, 120, 71161 }, // ₾
     { 17, 27, 16, 0, 24, 115, 71281 }, // ₿
     { 9, 4, 9, 0, 10, 9, 71396 }, // −
+    { 27, 28, 29, 1, 23, 189, 71405 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_14_bolditalicIntervals[] = {
@@ -5321,13 +5334,14 @@ static const EpdUnicodeInterval notosans_14_bolditalicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_14_bolditalic = {
     notosans_14_bolditalicBitmaps,
     notosans_14_bolditalicGlyphs,
     notosans_14_bolditalicIntervals,
-    11,
+    12,
     40,
     32,
     -9,

lib/EpdFont/builtinFonts/notosans_14_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_14_italicBitmaps[65135] = {
+static const uint8_t notosans_14_italicBitmaps[65324] = {
     0x00, 0x3F, 0x00, 0x1F, 0x80, 0x0B, 0xD0, 0x02, 0xF0, 0x00, 0xFC, 0x00, 0x3E, 0x00, 0x0F, 0x40,
     0x07, 0xC0, 0x02, 0xF0, 0x00, 0xF8, 0x00, 0x3D, 0x00, 0x0F, 0x00, 0x07, 0xC0, 0x01, 0xE0, 0x00,
     0xB4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x03, 0xF0, 0x01, 0xFC, 0x00, 0x7F, 0x00, 0x05,
@@ -4078,7 +4078,19 @@ static const uint8_t notosans_14_italicBitmaps[65135] = {
     0x0B, 0xFF, 0xFD, 0x00, 0x0F, 0xC0, 0x6F, 0x80, 0x0F, 0x80, 0x0B, 0xD0, 0x0F, 0x40, 0x03, 0xE0,
     0x1F, 0x00, 0x03, 0xE0, 0x2F, 0x00, 0x03, 0xE0, 0x3E, 0x00, 0x07, 0xD0, 0x3E, 0x00, 0x0F, 0xC0,
     0x7D, 0x01, 0xBF, 0x40, 0x7F, 0xFF, 0xFD, 0x00, 0xBF, 0xFF, 0xD0, 0x00, 0x07, 0x4B, 0x00, 0x00,
-    0x0B, 0x0F, 0x00, 0x00, 0x0E, 0x0E, 0x00, 0x00, 0x3F, 0xFF, 0x0F, 0xFF, 0xC1, 0x55, 0x50,
+    0x0B, 0x0F, 0x00, 0x00, 0x0E, 0x0E, 0x00, 0x00, 0x3F, 0xFF, 0x0F, 0xFF, 0xC1, 0x55, 0x50, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F,
+    0xD0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xD0, 0x00,
+    0x00, 0x00, 0x00, 0xFF, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x0F, 0xE9, 0x6F, 0xD0, 0x00, 0x00, 0x00,
+    0xF4, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0x0F, 0xC0, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0xFF, 0x86, 0xE0,
+    0x2F, 0xD0, 0x00, 0x0F, 0xFF, 0xFF, 0xC0, 0x7F, 0xD0, 0x00, 0xFF, 0xFF, 0xFF, 0x02, 0xFF, 0xD0,
+    0x0F, 0xFF, 0xFF, 0xF4, 0x0F, 0xFF, 0xD0, 0xFF, 0xFF, 0xFF, 0x40, 0xBF, 0xFF, 0xD7, 0xFF, 0xFF,
+    0xF4, 0x0B, 0xFF, 0xFF, 0x87, 0xFF, 0xFF, 0x80, 0xFF, 0xFF, 0xF8, 0x07, 0xFF, 0xFE, 0x07, 0xFF,
+    0xFF, 0x80, 0x07, 0xFF, 0xF8, 0x2F, 0xFF, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00,
+    0x07, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x07, 0xFD, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x07, 0xF0,
+    0x0F, 0xF8, 0x00, 0x00, 0x00, 0x07, 0xD0, 0x3F, 0x80, 0x00, 0x00, 0x00, 0x07, 0xD7, 0xF8, 0x00,
+    0x00, 0x00, 0x00, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x07, 0xF8, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x07, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_14_italicGlyphs[] = {
@@ -4915,6 +4927,7 @@ static const EpdGlyph notosans_14_italicGlyphs[] = {
     { 20, 24, 17, -1, 24, 120, 64900 }, // ₾
     { 16, 27, 16, 1, 24, 108, 65020 }, // ₿
     { 9, 3, 9, 0, 9, 7, 65128 }, // −
+    { 27, 28, 29, 1, 23, 189, 65135 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_14_italicIntervals[] = {
@@ -4929,13 +4942,14 @@ static const EpdUnicodeInterval notosans_14_italicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_14_italic = {
     notosans_14_italicBitmaps,
     notosans_14_italicGlyphs,
     notosans_14_italicIntervals,
-    11,
+    12,
     40,
     32,
     -9,

lib/EpdFont/builtinFonts/notosans_14_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_14_regularBitmaps[61202] = {
+static const uint8_t notosans_14_regularBitmaps[61391] = {
     0xBD, 0xBD, 0xBD, 0x7D, 0x7D, 0x7C, 0x7C, 0x7C, 0x3C, 0x3C, 0x3C, 0x3C, 0x3C, 0x3C, 0x3C, 0x00,
     0x00, 0x14, 0xBE, 0xFE, 0xBD, 0x14, 0x3E, 0x0B, 0xCF, 0x82, 0xF3, 0xD0, 0xBC, 0xF4, 0x2E, 0x3D,
     0x07, 0x8B, 0x41, 0xE2, 0xC0, 0x78, 0x60, 0x09, 0x00, 0x02, 0xC0, 0x1D, 0x00, 0x00, 0x0F, 0x00,
@@ -3833,7 +3833,18 @@ static const uint8_t notosans_14_regularBitmaps[61202] = {
     0x00, 0x00, 0xBC, 0x00, 0x00, 0x7D, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x1F, 0xD0,
     0x05, 0x07, 0xFF, 0xFE, 0x00, 0xBF, 0xFD, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFE,
     0x7F, 0xFF, 0xFE, 0x15, 0x55, 0x54, 0x15, 0x55, 0x55, 0x52, 0xFF, 0xFF, 0xFF, 0xC7, 0xFF, 0xFF,
-    0xFF, 0x00,
+    0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD0, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0x0F,
+    0xFF, 0xD0, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xD0, 0x00, 0x00, 0x00, 0x0F, 0xE9, 0x6F, 0xD0,
+    0x00, 0x00, 0x00, 0xF4, 0x00, 0x0F, 0xD0, 0x00, 0x00, 0x0F, 0xC0, 0x00, 0x0F, 0xD0, 0x00, 0x00,
+    0xFF, 0x86, 0xE0, 0x2F, 0xD0, 0x00, 0x0F, 0xFF, 0xFF, 0xC0, 0x7F, 0xD0, 0x00, 0xFF, 0xFF, 0xFF,
+    0x02, 0xFF, 0xD0, 0x0F, 0xFF, 0xFF, 0xF4, 0x0F, 0xFF, 0xD0, 0xFF, 0xFF, 0xFF, 0x40, 0xBF, 0xFF,
+    0xD7, 0xFF, 0xFF, 0xF4, 0x0B, 0xFF, 0xFF, 0x87, 0xFF, 0xFF, 0x80, 0xFF, 0xFF, 0xF8, 0x07, 0xFF,
+    0xFE, 0x07, 0xFF, 0xFF, 0x80, 0x07, 0xFF, 0xF8, 0x2F, 0xFF, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xFF,
+    0xFF, 0x80, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x07, 0xFD, 0x07, 0xFF, 0x80, 0x00,
+    0x00, 0x07, 0xF0, 0x0F, 0xF8, 0x00, 0x00, 0x00, 0x07, 0xD0, 0x3F, 0x80, 0x00, 0x00, 0x00, 0x07,
+    0xD7, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x07, 0xF8, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x07, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_14_regularGlyphs[] = {
@@ -4671,6 +4682,7 @@ static const EpdGlyph notosans_14_regularGlyphs[] = {
     { 14, 27, 17, 2, 24, 95, 61032 }, // ₿
     { 12, 21, 14, 1, 16, 63, 61127 }, // ⃀
     { 15, 3, 17, 1, 12, 12, 61190 }, // −
+    { 27, 28, 29, 1, 23, 189, 61202 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_14_regularIntervals[] = {
@@ -4685,13 +4697,14 @@ static const EpdUnicodeInterval notosans_14_regularIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_14_regular = {
     notosans_14_regularBitmaps,
     notosans_14_regularGlyphs,
     notosans_14_regularIntervals,
-    11,
+    12,
     40,
     32,
     -9,

lib/EpdFont/builtinFonts/notosans_16_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_16_boldBitmaps[86944] = {
+static const uint8_t notosans_16_boldBitmaps[87192] = {
     0x3F, 0xF4, 0xFF, 0xD3, 0xFF, 0x4F, 0xFD, 0x3F, 0xF4, 0xFF, 0xD3, 0xFF, 0x0F, 0xFC, 0x2F, 0xF0,
     0xBF, 0xC2, 0xFF, 0x0B, 0xFC, 0x1F, 0xF0, 0x7F, 0xC1, 0xFF, 0x07, 0xF8, 0x05, 0x40, 0x00, 0x00,
     0x00, 0x07, 0xF8, 0x3F, 0xF4, 0xFF, 0xE3, 0xFF, 0x4B, 0xFC, 0x01, 0x40, 0xFF, 0x82, 0xFE, 0xFF,
@@ -5442,6 +5442,22 @@ static const uint8_t notosans_16_boldBitmaps[86944] = {
     0xFF, 0xE0, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x55, 0x54, 0x7F, 0xFF,
     0xFF, 0xFC, 0x7F, 0xFF, 0xFF, 0xFC, 0x7F, 0xFF, 0xFF, 0xFC, 0x2A, 0xAA, 0xAA, 0xAA, 0x5F, 0xFF,
     0xFF, 0xFF, 0xE7, 0xFF, 0xFF, 0xFF, 0xF9, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFD, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xE4, 0x06, 0xFD, 0x00, 0x00, 0x00, 0x00,
+    0xF8, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x0F, 0xE0, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0xFF,
+    0xC1, 0xA8, 0x03, 0xFD, 0x00, 0x00, 0x0F, 0xFF, 0xBF, 0xF4, 0x0B, 0xFD, 0x00, 0x00, 0xFF, 0xFF,
+    0xFF, 0xE0, 0x2F, 0xFD, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFD, 0x00, 0xFF, 0xFF, 0xFF,
+    0xF0, 0x07, 0xFF, 0xFD, 0x0F, 0xFF, 0xFF, 0xFF, 0x00, 0x7F, 0xFF, 0xFD, 0x3F, 0xFF, 0xFF, 0xF0,
+    0x07, 0xFF, 0xFF, 0xF4, 0x3F, 0xFF, 0xFF, 0x80, 0xBF, 0xFF, 0xFF, 0x40, 0x3F, 0xFF, 0xFD, 0x03,
+    0xFF, 0xFF, 0xF4, 0x00, 0x3F, 0xFF, 0xF4, 0x1F, 0xFF, 0xFF, 0x40, 0x00, 0x3F, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xF4, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x3F, 0xFF, 0x5B, 0xFF,
+    0xF4, 0x00, 0x00, 0x00, 0x3F, 0xF0, 0x0F, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x3F, 0xC0, 0x2F, 0xF4,
+    0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x5B, 0xF4, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF4, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x3F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_16_boldGlyphs[] = {
@@ -6279,6 +6295,7 @@ static const EpdGlyph notosans_16_boldGlyphs[] = {
     { 15, 32, 19, 3, 28, 120, 86702 }, // ₿
     { 16, 25, 17, 1, 19, 100, 86822 }, // ⃀
     { 17, 5, 19, 1, 14, 22, 86922 }, // −
+    { 31, 32, 33, 1, 26, 248, 86944 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_16_boldIntervals[] = {
@@ -6293,13 +6310,14 @@ static const EpdUnicodeInterval notosans_16_boldIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_16_bold = {
     notosans_16_boldBitmaps,
     notosans_16_boldGlyphs,
     notosans_16_boldIntervals,
-    11,
+    12,
     45,
     36,
     -10,

lib/EpdFont/builtinFonts/notosans_16_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_16_bolditalicBitmaps[92423] = {
+static const uint8_t notosans_16_bolditalicBitmaps[92671] = {
     0x00, 0x3F, 0xF4, 0x01, 0xFF, 0xD0, 0x07, 0xFF, 0x00, 0x2F, 0xF8, 0x00, 0xFF, 0xD0, 0x03, 0xFF,
     0x00, 0x0F, 0xFC, 0x00, 0x7F, 0xE0, 0x01, 0xFF, 0x40, 0x0B, 0xFC, 0x00, 0x3F, 0xF0, 0x00, 0xFF,
     0x80, 0x03, 0xFD, 0x00, 0x1F, 0xF0, 0x00, 0x7F, 0xC0, 0x02, 0xFE, 0x00, 0x01, 0x50, 0x00, 0x00,
@@ -5784,7 +5784,22 @@ static const uint8_t notosans_16_bolditalicBitmaps[92423] = {
     0xFE, 0x07, 0xFF, 0xC0, 0x1F, 0xFF, 0xFF, 0xFE, 0x00, 0xBF, 0xFF, 0xFF, 0xF0, 0x03, 0xFF, 0xFF,
     0xFE, 0x00, 0x0F, 0xFF, 0xFF, 0x40, 0x00, 0x01, 0xF0, 0xF4, 0x00, 0x00, 0x07, 0x83, 0xC0, 0x00,
     0x00, 0x2E, 0x1F, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x2F, 0xFF, 0xF3, 0xFF, 0xFE, 0x3F,
-    0xFF, 0xD7, 0xFF, 0xFD, 0x00, 0x00, 0x00,
+    0xFF, 0xD7, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x0F, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x0F, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x0F,
+    0xE4, 0x06, 0xFD, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x0F, 0xE0,
+    0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0xFF, 0xC1, 0xA8, 0x03, 0xFD, 0x00, 0x00, 0x0F, 0xFF, 0xBF,
+    0xF4, 0x0B, 0xFD, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xE0, 0x2F, 0xFD, 0x00, 0x0F, 0xFF, 0xFF, 0xFF,
+    0x00, 0xFF, 0xFD, 0x00, 0xFF, 0xFF, 0xFF, 0xF0, 0x07, 0xFF, 0xFD, 0x0F, 0xFF, 0xFF, 0xFF, 0x00,
+    0x7F, 0xFF, 0xFD, 0x3F, 0xFF, 0xFF, 0xF0, 0x07, 0xFF, 0xFF, 0xF4, 0x3F, 0xFF, 0xFF, 0x80, 0xBF,
+    0xFF, 0xFF, 0x40, 0x3F, 0xFF, 0xFD, 0x03, 0xFF, 0xFF, 0xF4, 0x00, 0x3F, 0xFF, 0xF4, 0x1F, 0xFF,
+    0xFF, 0x40, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF,
+    0x40, 0x00, 0x00, 0x3F, 0xFF, 0x5B, 0xFF, 0xF4, 0x00, 0x00, 0x00, 0x3F, 0xF0, 0x0F, 0xFF, 0x40,
+    0x00, 0x00, 0x00, 0x3F, 0xC0, 0x2F, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0xFF, 0x40, 0x00,
+    0x00, 0x00, 0x00, 0x3F, 0x5B, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0x40, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x3F, 0xF4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x40, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_16_bolditalicGlyphs[] = {
@@ -6621,6 +6636,7 @@ static const EpdGlyph notosans_16_bolditalicGlyphs[] = {
     { 23, 28, 20, -1, 28, 161, 92097 }, // ₾
     { 19, 32, 18, 0, 28, 152, 92258 }, // ₿
     { 10, 5, 11, 0, 11, 13, 92410 }, // −
+    { 31, 32, 33, 1, 26, 248, 92423 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_16_bolditalicIntervals[] = {
@@ -6635,13 +6651,14 @@ static const EpdUnicodeInterval notosans_16_bolditalicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_16_bolditalic = {
     notosans_16_bolditalicBitmaps,
     notosans_16_bolditalicGlyphs,
     notosans_16_bolditalicIntervals,
-    11,
+    12,
     45,
     36,
     -10,

lib/EpdFont/builtinFonts/notosans_16_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_16_italicBitmaps[83982] = {
+static const uint8_t notosans_16_italicBitmaps[84230] = {
     0x00, 0x1F, 0xC0, 0x02, 0xFC, 0x00, 0x3F, 0x80, 0x03, 0xF4, 0x00, 0x3F, 0x00, 0x07, 0xF0, 0x00,
     0xBE, 0x00, 0x0B, 0xD0, 0x00, 0xFC, 0x00, 0x0F, 0xC0, 0x00, 0xF8, 0x00, 0x1F, 0x40, 0x02, 0xF0,
     0x00, 0x3F, 0x00, 0x03, 0xE0, 0x00, 0x3D, 0x00, 0x07, 0xC0, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00,
@@ -5256,7 +5256,23 @@ static const uint8_t notosans_16_italicBitmaps[83982] = {
     0x00, 0x7F, 0x01, 0xF8, 0x00, 0x07, 0xE0, 0x1F, 0x40, 0x00, 0xBE, 0x02, 0xF4, 0x00, 0x0F, 0xC0,
     0x3F, 0x00, 0x07, 0xF8, 0x03, 0xFA, 0xAB, 0xFF, 0x00, 0x7F, 0xFF, 0xFF, 0x80, 0x0B, 0xFF, 0xFF,
     0x80, 0x00, 0x03, 0xC2, 0xD0, 0x00, 0x00, 0x3C, 0x3C, 0x00, 0x00, 0x07, 0x83, 0xC0, 0x00, 0x00,
-    0x10, 0x10, 0x00, 0x00, 0x05, 0x55, 0x42, 0xFF, 0xFC, 0x3F, 0xFF, 0xC1, 0x55, 0x54,
+    0x10, 0x10, 0x00, 0x00, 0x05, 0x55, 0x42, 0xFF, 0xFC, 0x3F, 0xFF, 0xC1, 0x55, 0x54, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+    0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xE4, 0x06, 0xFD, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x00,
+    0x00, 0xFD, 0x00, 0x00, 0x00, 0x0F, 0xE0, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0xFF, 0xC1, 0xA8,
+    0x03, 0xFD, 0x00, 0x00, 0x0F, 0xFF, 0xBF, 0xF4, 0x0B, 0xFD, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xE0,
+    0x2F, 0xFD, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFD, 0x00, 0xFF, 0xFF, 0xFF, 0xF0, 0x07,
+    0xFF, 0xFD, 0x0F, 0xFF, 0xFF, 0xFF, 0x00, 0x7F, 0xFF, 0xFD, 0x3F, 0xFF, 0xFF, 0xF0, 0x07, 0xFF,
+    0xFF, 0xF4, 0x3F, 0xFF, 0xFF, 0x80, 0xBF, 0xFF, 0xFF, 0x40, 0x3F, 0xFF, 0xFD, 0x03, 0xFF, 0xFF,
+    0xF4, 0x00, 0x3F, 0xFF, 0xF4, 0x1F, 0xFF, 0xFF, 0x40, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4,
+    0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x3F, 0xFF, 0x5B, 0xFF, 0xF4, 0x00,
+    0x00, 0x00, 0x3F, 0xF0, 0x0F, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x3F, 0xC0, 0x2F, 0xF4, 0x00, 0x00,
+    0x00, 0x00, 0x3F, 0x00, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x5B, 0xF4, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x3F, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF4, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x3F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_16_italicGlyphs[] = {
@@ -6093,6 +6109,7 @@ static const EpdGlyph notosans_16_italicGlyphs[] = {
     { 22, 28, 20, -1, 28, 154, 83674 }, // ₾
     { 18, 32, 18, 1, 28, 144, 83828 }, // ₿
     { 10, 4, 10, 0, 11, 10, 83972 }, // −
+    { 31, 32, 33, 1, 26, 248, 83982 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_16_italicIntervals[] = {
@@ -6107,13 +6124,14 @@ static const EpdUnicodeInterval notosans_16_italicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_16_italic = {
     notosans_16_italicBitmaps,
     notosans_16_italicGlyphs,
     notosans_16_italicIntervals,
-    11,
+    12,
     45,
     36,
     -10,

lib/EpdFont/builtinFonts/notosans_16_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_16_regularBitmaps[78480] = {
+static const uint8_t notosans_16_regularBitmaps[78728] = {
     0x3F, 0x0F, 0xC3, 0xF0, 0xFC, 0x3F, 0x0F, 0xC3, 0xF0, 0xFC, 0x3F, 0x0F, 0xC3, 0xF0, 0xF8, 0x2E,
     0x0B, 0x82, 0xE0, 0xB8, 0x2D, 0x01, 0x00, 0x00, 0x00, 0x3F, 0x2F, 0xDB, 0xF9, 0xFC, 0x04, 0x00,
     0xBC, 0x0B, 0xDB, 0xC0, 0xBD, 0xBC, 0x0B, 0xDB, 0xC0, 0x7C, 0xBC, 0x07, 0xC7, 0xC0, 0x7C, 0x7C,
@@ -4913,6 +4913,22 @@ static const uint8_t notosans_16_regularBitmaps[78480] = {
     0x2F, 0x80, 0x00, 0x01, 0xFD, 0x00, 0x00, 0x0B, 0xF9, 0x06, 0xD0, 0x2F, 0xFF, 0xFD, 0x00, 0x7F,
     0xFF, 0x80, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x54, 0x3F, 0xFF, 0xFF, 0xE3,
     0xFF, 0xFF, 0xFD, 0x7F, 0xFF, 0xFF, 0xFF, 0x5F, 0xFF, 0xFF, 0xFF, 0xD1, 0x55, 0x55, 0x55, 0x50,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFD, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xFF, 0xFF, 0xFD, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xE4, 0x06, 0xFD, 0x00, 0x00, 0x00, 0x00,
+    0xF8, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x0F, 0xE0, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0xFF,
+    0xC1, 0xA8, 0x03, 0xFD, 0x00, 0x00, 0x0F, 0xFF, 0xBF, 0xF4, 0x0B, 0xFD, 0x00, 0x00, 0xFF, 0xFF,
+    0xFF, 0xE0, 0x2F, 0xFD, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFD, 0x00, 0xFF, 0xFF, 0xFF,
+    0xF0, 0x07, 0xFF, 0xFD, 0x0F, 0xFF, 0xFF, 0xFF, 0x00, 0x7F, 0xFF, 0xFD, 0x3F, 0xFF, 0xFF, 0xF0,
+    0x07, 0xFF, 0xFF, 0xF4, 0x3F, 0xFF, 0xFF, 0x80, 0xBF, 0xFF, 0xFF, 0x40, 0x3F, 0xFF, 0xFD, 0x03,
+    0xFF, 0xFF, 0xF4, 0x00, 0x3F, 0xFF, 0xF4, 0x1F, 0xFF, 0xFF, 0x40, 0x00, 0x3F, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xF4, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x3F, 0xFF, 0x5B, 0xFF,
+    0xF4, 0x00, 0x00, 0x00, 0x3F, 0xF0, 0x0F, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x3F, 0xC0, 0x2F, 0xF4,
+    0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x5B, 0xF4, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF4, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x3F, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_16_regularGlyphs[] = {
@@ -5750,6 +5766,7 @@ static const EpdGlyph notosans_16_regularGlyphs[] = {
     { 15, 32, 19, 3, 28, 120, 78263 }, // ₿
     { 14, 24, 16, 1, 19, 84, 78383 }, // ⃀
     { 17, 3, 19, 1, 13, 13, 78467 }, // −
+    { 31, 32, 33, 1, 26, 248, 78480 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_16_regularIntervals[] = {
@@ -5764,13 +5781,14 @@ static const EpdUnicodeInterval notosans_16_regularIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_16_regular = {
     notosans_16_regularBitmaps,
     notosans_16_regularGlyphs,
     notosans_16_regularIntervals,
-    11,
+    12,
     45,
     36,
     -10,

lib/EpdFont/builtinFonts/notosans_18_bold.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_18_boldBitmaps[108125] = {
+static const uint8_t notosans_18_boldBitmaps[108432] = {
     0xBF, 0xF7, 0xFF, 0xDF, 0xFF, 0x6F, 0xFD, 0xBF, 0xF2, 0xFF, 0xCB, 0xFF, 0x2F, 0xFC, 0x7F, 0xF1,
     0xFF, 0xC7, 0xFF, 0x1F, 0xFC, 0x7F, 0xF0, 0xFF, 0xC3, 0xFE, 0x0F, 0xF8, 0x3F, 0xE0, 0xFF, 0x81,
     0x54, 0x00, 0x00, 0x00, 0x00, 0x6E, 0x0B, 0xFF, 0x3F, 0xFD, 0xFF, 0xF7, 0xFF, 0xD7, 0xFE, 0x01,
@@ -6765,7 +6765,26 @@ static const uint8_t notosans_18_boldBitmaps[108125] = {
     0xF8, 0x00, 0x1F, 0xFF, 0xFD, 0x00, 0x00, 0x01, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xC3, 0xFF, 0xFF, 0xFF, 0xFC, 0x3F, 0xFF, 0xFF, 0xFF,
     0xC2, 0xAA, 0xAA, 0xAA, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xF3, 0xFF,
-    0xFF, 0xFF, 0xFF, 0xCF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0xFF, 0xFF, 0xFF, 0xF8,
+    0xFF, 0xFF, 0xFF, 0xCF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x1F, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xE0, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x1F, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xE0, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFA, 0xFF,
+    0xE0, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x2F, 0xE0, 0x00, 0x00, 0x00, 0x01, 0xFC, 0x00,
+    0x00, 0x0F, 0xE0, 0x00, 0x00, 0x00, 0x1F, 0xF0, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x00, 0x01, 0xFF,
+    0xD0, 0x6A, 0x00, 0x3F, 0xE0, 0x00, 0x00, 0x1F, 0xFF, 0xDF, 0xFE, 0x00, 0xFF, 0xE0, 0x00, 0x01,
+    0xFF, 0xFF, 0xFF, 0xFC, 0x03, 0xFF, 0xE0, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xE0, 0x0F, 0xFF, 0xE0,
+    0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x7F, 0xFF, 0xE0, 0x1F, 0xFF, 0xFF, 0xFF, 0xE0, 0x03, 0xFF,
+    0xFF, 0xE0, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x3F, 0xFF, 0xFF, 0xE2, 0xFF, 0xFF, 0xFF, 0xF0, 0x07,
+    0xFF, 0xFF, 0xFF, 0x02, 0xFF, 0xFF, 0xFF, 0x40, 0x7F, 0xFF, 0xFF, 0xF0, 0x02, 0xFF, 0xFF, 0xFC,
+    0x03, 0xFF, 0xFF, 0xFF, 0x00, 0x02, 0xFF, 0xFF, 0xF0, 0x0F, 0xFF, 0xFF, 0xF0, 0x00, 0x02, 0xFF,
+    0xFF, 0xEA, 0xBF, 0xFF, 0xFF, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00,
+    0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xF4, 0x0F, 0xFF, 0xF0, 0x00,
+    0x00, 0x00, 0x02, 0xFF, 0x80, 0x1F, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFE, 0x00, 0x7F, 0xF0,
+    0x00, 0x00, 0x00, 0x00, 0x02, 0xFC, 0x02, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xF9, 0x6F,
+    0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
+    0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x02, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_18_boldGlyphs[] = {
@@ -7603,6 +7622,7 @@ static const EpdGlyph notosans_18_boldGlyphs[] = {
     { 18, 35, 21, 3, 31, 158, 107817 }, // ₿
     { 18, 28, 20, 1, 21, 126, 107975 }, // ⃀
     { 19, 5, 22, 1, 16, 24, 108101 }, // −
+    { 35, 35, 38, 1, 29, 307, 108125 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_18_boldIntervals[] = {
@@ -7617,13 +7637,14 @@ static const EpdUnicodeInterval notosans_18_boldIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_18_bold = {
     notosans_18_boldBitmaps,
     notosans_18_boldGlyphs,
     notosans_18_boldIntervals,
-    11,
+    12,
     51,
     41,
     -11,

lib/EpdFont/builtinFonts/notosans_18_bolditalic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_18_bolditalicBitmaps[115270] = {
+static const uint8_t notosans_18_bolditalicBitmaps[115577] = {
     0x00, 0x1F, 0xFE, 0x00, 0x2F, 0xFE, 0x00, 0x3F, 0xFD, 0x00, 0x3F, 0xFC, 0x00, 0x3F, 0xFC, 0x00,
     0x7F, 0xF8, 0x00, 0x7F, 0xF4, 0x00, 0xBF, 0xF0, 0x00, 0xFF, 0xF0, 0x00, 0xFF, 0xE0, 0x00, 0xFF,
     0xD0, 0x01, 0xFF, 0xC0, 0x02, 0xFF, 0x80, 0x02, 0xFF, 0x40, 0x03, 0xFF, 0x00, 0x03, 0xFF, 0x00,
@@ -7212,7 +7212,26 @@ static const uint8_t notosans_18_bolditalicBitmaps[115270] = {
     0xFF, 0xFF, 0xFF, 0x40, 0x0B, 0xFF, 0xFF, 0xFF, 0x00, 0x03, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x03,
     0xE0, 0xF8, 0x00, 0x00, 0x00, 0xF8, 0x3E, 0x00, 0x00, 0x00, 0x3D, 0x0F, 0x40, 0x00, 0x00, 0x1A,
     0x06, 0x80, 0x00, 0x00, 0x05, 0x55, 0x54, 0x2F, 0xFF, 0xFC, 0x3F, 0xFF, 0xFC, 0x3F, 0xFF, 0xF8,
-    0x3F, 0xFF, 0xF4, 0x15, 0x55, 0x50,
+    0x3F, 0xFF, 0xF4, 0x15, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x01, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xE0, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xFF,
+    0xE0, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFA, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0,
+    0x00, 0x2F, 0xE0, 0x00, 0x00, 0x00, 0x01, 0xFC, 0x00, 0x00, 0x0F, 0xE0, 0x00, 0x00, 0x00, 0x1F,
+    0xF0, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x00, 0x01, 0xFF, 0xD0, 0x6A, 0x00, 0x3F, 0xE0, 0x00, 0x00,
+    0x1F, 0xFF, 0xDF, 0xFE, 0x00, 0xFF, 0xE0, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFC, 0x03, 0xFF, 0xE0,
+    0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xE0, 0x0F, 0xFF, 0xE0, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x7F,
+    0xFF, 0xE0, 0x1F, 0xFF, 0xFF, 0xFF, 0xE0, 0x03, 0xFF, 0xFF, 0xE0, 0xFF, 0xFF, 0xFF, 0xFE, 0x00,
+    0x3F, 0xFF, 0xFF, 0xE2, 0xFF, 0xFF, 0xFF, 0xF0, 0x07, 0xFF, 0xFF, 0xFF, 0x02, 0xFF, 0xFF, 0xFF,
+    0x40, 0x7F, 0xFF, 0xFF, 0xF0, 0x02, 0xFF, 0xFF, 0xFC, 0x03, 0xFF, 0xFF, 0xFF, 0x00, 0x02, 0xFF,
+    0xFF, 0xF0, 0x0F, 0xFF, 0xFF, 0xF0, 0x00, 0x02, 0xFF, 0xFF, 0xEA, 0xBF, 0xFF, 0xFF, 0x00, 0x00,
+    0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00,
+    0x00, 0x00, 0x02, 0xFF, 0xF4, 0x0F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x80, 0x1F, 0xFF,
+    0x00, 0x00, 0x00, 0x00, 0x02, 0xFE, 0x00, 0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFC, 0x02,
+    0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xF9, 0x6F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
+    0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x02, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xF0, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_18_bolditalicGlyphs[] = {
@@ -8049,6 +8068,7 @@ static const EpdGlyph notosans_18_bolditalicGlyphs[] = {
     { 26, 31, 23, -1, 31, 202, 114866 }, // ₾
     { 21, 35, 21, 0, 31, 184, 115068 }, // ₿
     { 12, 6, 12, 0, 13, 18, 115252 }, // −
+    { 35, 35, 38, 1, 29, 307, 115270 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_18_bolditalicIntervals[] = {
@@ -8063,13 +8083,14 @@ static const EpdUnicodeInterval notosans_18_bolditalicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_18_bolditalic = {
     notosans_18_bolditalicBitmaps,
     notosans_18_bolditalicGlyphs,
     notosans_18_bolditalicIntervals,
-    11,
+    12,
     51,
     41,
     -11,

lib/EpdFont/builtinFonts/notosans_18_italic.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_18_italicBitmaps[105127] = {
+static const uint8_t notosans_18_italicBitmaps[105434] = {
     0x00, 0x0B, 0xF0, 0x00, 0x3F, 0xC0, 0x00, 0xFF, 0x00, 0x07, 0xF8, 0x00, 0x1F, 0xD0, 0x00, 0xBF,
     0x00, 0x03, 0xFC, 0x00, 0x0F, 0xE0, 0x00, 0x3F, 0x40, 0x01, 0xFC, 0x00, 0x0B, 0xF0, 0x00, 0x2F,
     0x80, 0x00, 0xFD, 0x00, 0x03, 0xF0, 0x00, 0x0F, 0xC0, 0x00, 0x7E, 0x00, 0x02, 0xF4, 0x00, 0x0F,
@@ -6578,7 +6578,26 @@ static const uint8_t notosans_18_italicBitmaps[105127] = {
     0xC0, 0x00, 0x3F, 0xC0, 0x2F, 0x80, 0x02, 0xFF, 0x40, 0x3F, 0xFF, 0xFF, 0xFD, 0x00, 0x3F, 0xFF,
     0xFF, 0xF4, 0x00, 0x7F, 0xFF, 0xFE, 0x40, 0x00, 0x01, 0xF0, 0xB8, 0x00, 0x00, 0x02, 0xE0, 0xF4,
     0x00, 0x00, 0x03, 0xD0, 0xF4, 0x00, 0x00, 0x02, 0x80, 0xA0, 0x00, 0x00, 0x0A, 0xAA, 0xA0, 0xBF,
-    0xFF, 0xD3, 0xFF, 0xFF, 0x05, 0x55, 0x54,
+    0xFF, 0xD3, 0xFF, 0xFF, 0x05, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xE0,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF,
+    0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFA, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x1F,
+    0xE0, 0x00, 0x2F, 0xE0, 0x00, 0x00, 0x00, 0x01, 0xFC, 0x00, 0x00, 0x0F, 0xE0, 0x00, 0x00, 0x00,
+    0x1F, 0xF0, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x00, 0x01, 0xFF, 0xD0, 0x6A, 0x00, 0x3F, 0xE0, 0x00,
+    0x00, 0x1F, 0xFF, 0xDF, 0xFE, 0x00, 0xFF, 0xE0, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFC, 0x03, 0xFF,
+    0xE0, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xE0, 0x0F, 0xFF, 0xE0, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x00,
+    0x7F, 0xFF, 0xE0, 0x1F, 0xFF, 0xFF, 0xFF, 0xE0, 0x03, 0xFF, 0xFF, 0xE0, 0xFF, 0xFF, 0xFF, 0xFE,
+    0x00, 0x3F, 0xFF, 0xFF, 0xE2, 0xFF, 0xFF, 0xFF, 0xF0, 0x07, 0xFF, 0xFF, 0xFF, 0x02, 0xFF, 0xFF,
+    0xFF, 0x40, 0x7F, 0xFF, 0xFF, 0xF0, 0x02, 0xFF, 0xFF, 0xFC, 0x03, 0xFF, 0xFF, 0xFF, 0x00, 0x02,
+    0xFF, 0xFF, 0xF0, 0x0F, 0xFF, 0xFF, 0xF0, 0x00, 0x02, 0xFF, 0xFF, 0xEA, 0xBF, 0xFF, 0xFF, 0x00,
+    0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0x00, 0x00, 0x00, 0x02, 0xFF, 0xF4, 0x0F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x80, 0x1F,
+    0xFF, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFE, 0x00, 0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFC,
+    0x02, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xF9, 0x6F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x02, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xF0, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_18_italicGlyphs[] = {
@@ -7415,6 +7434,7 @@ static const EpdGlyph notosans_18_italicGlyphs[] = {
     { 25, 31, 22, -1, 31, 194, 104747 }, // ₾
     { 20, 35, 21, 1, 31, 175, 104941 }, // ₿
     { 11, 4, 12, 0, 12, 11, 105116 }, // −
+    { 35, 35, 38, 1, 29, 307, 105127 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_18_italicIntervals[] = {
@@ -7429,13 +7449,14 @@ static const EpdUnicodeInterval notosans_18_italicIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20BF, 0x320 },
     { 0x2212, 0x2212, 0x340 },
+    { 0xFFFD, 0xFFFD, 0x341 },
 };
 
 static const EpdFontData notosans_18_italic = {
     notosans_18_italicBitmaps,
     notosans_18_italicGlyphs,
     notosans_18_italicIntervals,
-    11,
+    12,
     51,
     41,
     -11,

lib/EpdFont/builtinFonts/notosans_18_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_18_regularBitmaps[98532] = {
+static const uint8_t notosans_18_regularBitmaps[98839] = {
     0x2F, 0xC3, 0xFC, 0x3F, 0xC3, 0xFC, 0x3F, 0xC2, 0xFC, 0x2F, 0x82, 0xF8, 0x2F, 0x82, 0xF8, 0x1F,
     0x81, 0xF4, 0x1F, 0x41, 0xF4, 0x1F, 0x40, 0xF4, 0x0F, 0x40, 0xF0, 0x0F, 0x00, 0x50, 0x00, 0x00,
     0x00, 0x05, 0x03, 0xFC, 0x7F, 0xD3, 0xFD, 0x3F, 0xC0, 0x50, 0x7F, 0x02, 0xF9, 0xFC, 0x0B, 0xF7,
@@ -6166,7 +6166,26 @@ static const uint8_t notosans_18_regularBitmaps[98532] = {
     0xBC, 0x00, 0xFF, 0xFF, 0xFC, 0x00, 0x1F, 0xFF, 0xF8, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFD, 0x3F, 0xFF, 0xFF, 0xFD, 0x2A, 0xAA, 0xAA,
     0xA8, 0x2A, 0xAA, 0xAA, 0xAA, 0xA4, 0xFF, 0xFF, 0xFF, 0xFF, 0xE3, 0xFF, 0xFF, 0xFF, 0xFF, 0x80,
-    0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x01, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x01, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xE0, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x01, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xE0, 0x00,
+    0x00, 0x00, 0x00, 0x01, 0xFF, 0xFA, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0, 0x00, 0x2F,
+    0xE0, 0x00, 0x00, 0x00, 0x01, 0xFC, 0x00, 0x00, 0x0F, 0xE0, 0x00, 0x00, 0x00, 0x1F, 0xF0, 0x00,
+    0x00, 0x1F, 0xE0, 0x00, 0x00, 0x01, 0xFF, 0xD0, 0x6A, 0x00, 0x3F, 0xE0, 0x00, 0x00, 0x1F, 0xFF,
+    0xDF, 0xFE, 0x00, 0xFF, 0xE0, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFC, 0x03, 0xFF, 0xE0, 0x00, 0x1F,
+    0xFF, 0xFF, 0xFF, 0xE0, 0x0F, 0xFF, 0xE0, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x7F, 0xFF, 0xE0,
+    0x1F, 0xFF, 0xFF, 0xFF, 0xE0, 0x03, 0xFF, 0xFF, 0xE0, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x3F, 0xFF,
+    0xFF, 0xE2, 0xFF, 0xFF, 0xFF, 0xF0, 0x07, 0xFF, 0xFF, 0xFF, 0x02, 0xFF, 0xFF, 0xFF, 0x40, 0x7F,
+    0xFF, 0xFF, 0xF0, 0x02, 0xFF, 0xFF, 0xFC, 0x03, 0xFF, 0xFF, 0xFF, 0x00, 0x02, 0xFF, 0xFF, 0xF0,
+    0x0F, 0xFF, 0xFF, 0xF0, 0x00, 0x02, 0xFF, 0xFF, 0xEA, 0xBF, 0xFF, 0xFF, 0x00, 0x00, 0x02, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
+    0x02, 0xFF, 0xF4, 0x0F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x80, 0x1F, 0xFF, 0x00, 0x00,
+    0x00, 0x00, 0x02, 0xFE, 0x00, 0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFC, 0x02, 0xFF, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x02, 0xF9, 0x6F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xFF,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
+    0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 static const EpdGlyph notosans_18_regularGlyphs[] = {
@@ -7004,6 +7023,7 @@ static const EpdGlyph notosans_18_regularGlyphs[] = {
     { 18, 35, 21, 3, 31, 158, 98247 }, // ₿
     { 16, 27, 18, 1, 21, 108, 98405 }, // ⃀
     { 19, 4, 21, 1, 15, 19, 98513 }, // −
+    { 35, 35, 38, 1, 29, 307, 98532 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_18_regularIntervals[] = {
@@ -7018,13 +7038,14 @@ static const EpdUnicodeInterval notosans_18_regularIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_18_regular = {
     notosans_18_regularBitmaps,
     notosans_18_regularGlyphs,
     notosans_18_regularIntervals,
-    11,
+    12,
     51,
     41,
     -11,

lib/EpdFont/builtinFonts/notosans_8_regular.h

@@ -7,7 +7,7 @@
 #pragma once
 #include "EpdFontData.h"
 
-static const uint8_t notosans_8_regularBitmaps[10949] = {
+static const uint8_t notosans_8_regularBitmaps[10981] = {
     0xDB, 0x6D, 0xB6, 0xC3, 0xF4, 0xDE, 0xF7, 0xBD, 0x80, 0x0D, 0x83, 0x30, 0x66, 0x3F, 0xF7, 0xFE,
     0x36, 0x04, 0xC7, 0xFE, 0xFF, 0xC6, 0x40, 0xD8, 0x1B, 0x00, 0x18, 0x18, 0xFE, 0xFE, 0xD8, 0xF8,
     0xFC, 0x3E, 0x1F, 0x1B, 0xFF, 0xFE, 0x38, 0x18, 0x00, 0x01, 0xE1, 0x86, 0xCC, 0x13, 0x30, 0xCD,
@@ -692,7 +692,9 @@ static const uint8_t notosans_8_regularBitmaps[10949] = {
     0x07, 0x01, 0xC0, 0x1B, 0x03, 0xE1, 0xFF, 0x3D, 0xED, 0xBF, 0xB6, 0xF6, 0xDE, 0x53, 0xC0, 0x1C,
     0x01, 0x80, 0x3F, 0xE7, 0xFC, 0x3C, 0x3C, 0xFE, 0xFF, 0xE3, 0xE3, 0xE7, 0xFE, 0xFF, 0xE3, 0xE3,
     0xE3, 0xFF, 0xFE, 0x3C, 0x3C, 0x00, 0x3F, 0x7E, 0x60, 0x60, 0xE0, 0xE0, 0x60, 0x7E, 0x3F, 0x0C,
-    0x7F, 0x7E, 0x7F, 0xFF, 0xC0,
+    0x7F, 0x7E, 0x7F, 0xFF, 0xC0, 0x00, 0x80, 0x01, 0xC0, 0x03, 0xE0, 0x07, 0xF0, 0x0C, 0x38, 0x1F,
+    0xDC, 0x3F, 0xDE, 0x7F, 0xBF, 0x7F, 0x7F, 0x3F, 0x7E, 0x1F, 0xFC, 0x0F, 0xF8, 0x06, 0x70, 0x03,
+    0xE0, 0x01, 0xC0, 0x00, 0x80,
 };
 
 static const EpdGlyph notosans_8_regularGlyphs[] = {
@@ -1530,6 +1532,7 @@ static const EpdGlyph notosans_8_regularGlyphs[] = {
     { 8, 16, 10, 1, 14, 16, 10917 }, // ₿
     { 8, 13, 8, 0, 10, 13, 10933 }, // ⃀
     { 9, 2, 10, 0, 7, 3, 10946 }, // −
+    { 16, 16, 17, 0, 13, 32, 10949 }, // <20>
 };
 
 static const EpdUnicodeInterval notosans_8_regularIntervals[] = {
@@ -1544,13 +1547,14 @@ static const EpdUnicodeInterval notosans_8_regularIntervals[] = {
     { 0x2066, 0x206F, 0x316 },
     { 0x20A0, 0x20C0, 0x320 },
     { 0x2212, 0x2212, 0x341 },
+    { 0xFFFD, 0xFFFD, 0x342 },
 };
 
 static const EpdFontData notosans_8_regular = {
     notosans_8_regularBitmaps,
     notosans_8_regularGlyphs,
     notosans_8_regularIntervals,
-    11,
+    12,
     23,
     18,
     -5,

lib/EpdFont/scripts/fontconvert.py

@@ -99,6 +99,9 @@ intervals = [
     # (0xFE30, 0xFE4F),
     # # CJK Compatibility Ideographs
     # (0xF900, 0xFAFF),
+    ### Specials
+    # Replacement Character
+    (0xFFFD, 0xFFFD),
 ]
 
 add_ints = []

lib/Epub/Epub.cpp

@@ -74,6 +74,7 @@ bool Epub::parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata) {
   // Grab data from opfParser into epub
   bookMetadata.title = opfParser.title;
   bookMetadata.author = opfParser.author;
+  bookMetadata.language = opfParser.language;
   bookMetadata.coverItemHref = opfParser.coverItemHref;
   bookMetadata.textReferenceHref = opfParser.textReferenceHref;
 
@@ -405,6 +406,15 @@ const std::string& Epub::getAuthor() const {
   return bookMetadataCache->coreMetadata.author;
 }
 
+const std::string& Epub::getLanguage() const {
+  static std::string blank;
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    return blank;
+  }
+
+  return bookMetadataCache->coreMetadata.language;
+}
+
 std::string Epub::getCoverBmpPath(bool cropped) const {
   const auto coverFileName = "cover" + cropped ? "_crop" : "";
   return cachePath + "/" + coverFileName + ".bmp";
@@ -666,14 +676,15 @@ int Epub::getSpineIndexForTextReference() const {
   return 0;
 }
 
-// Calculate progress in book
-uint8_t Epub::calculateProgress(const int currentSpineIndex, const float currentSpineRead) const {
+// Calculate progress in book (returns 0.0-1.0)
+float Epub::calculateProgress(const int currentSpineIndex, const float currentSpineRead) const {
   const size_t bookSize = getBookSize();
   if (bookSize == 0) {
-    return 0;
+    return 0.0f;
   }
   const size_t prevChapterSize = (currentSpineIndex >= 1) ? getCumulativeSpineItemSize(currentSpineIndex - 1) : 0;
   const size_t curChapterSize = getCumulativeSpineItemSize(currentSpineIndex) - prevChapterSize;
-  const size_t sectionProgSize = currentSpineRead * curChapterSize;
-  return round(static_cast<float>(prevChapterSize + sectionProgSize) / bookSize * 100.0);
+  const float sectionProgSize = currentSpineRead * static_cast<float>(curChapterSize);
+  const float totalProgress = static_cast<float>(prevChapterSize) + sectionProgSize;
+  return totalProgress / static_cast<float>(bookSize);
 }

lib/Epub/Epub.h

@@ -48,6 +48,7 @@ class Epub {
   const std::string& getPath() const;
   const std::string& getTitle() const;
   const std::string& getAuthor() const;
+  const std::string& getLanguage() const;
   std::string getCoverBmpPath(bool cropped = false) const;
   bool generateCoverBmp(bool cropped = false) const;
   std::string getThumbBmpPath() const;
@@ -66,6 +67,6 @@ class Epub {
   int getSpineIndexForTextReference() const;
 
   size_t getBookSize() const;
-  uint8_t calculateProgress(int currentSpineIndex, float currentSpineRead) const;
+  float calculateProgress(int currentSpineIndex, float currentSpineRead) const;
   const CssParser* getCssParser() const { return cssParser.get(); }
 };

lib/Epub/Epub/BookMetadataCache.cpp

@@ -92,8 +92,9 @@ bool BookMetadataCache::buildBookBin(const std::string& epubPath, const BookMeta
   for (const auto& css : metadata.cssFiles) {
     cssFilesSize += sizeof(uint32_t) + css.size();
   }
-  const uint32_t metadataSize = metadata.title.size() + metadata.author.size() + metadata.coverItemHref.size() +
-                                metadata.textReferenceHref.size() + sizeof(uint32_t) * 4 + cssFilesSize;
+  const uint32_t metadataSize = metadata.title.size() + metadata.author.size() + metadata.language.size() +
+                                metadata.coverItemHref.size() + metadata.textReferenceHref.size() +
+                                sizeof(uint32_t) * 5 + cssFilesSize;
   const uint32_t lutSize = sizeof(uint32_t) * spineCount + sizeof(uint32_t) * tocCount;
   const uint32_t lutOffset = headerASize + metadataSize;
 
@@ -105,6 +106,7 @@ bool BookMetadataCache::buildBookBin(const std::string& epubPath, const BookMeta
   // Metadata
   serialization::writeString(bookFile, metadata.title);
   serialization::writeString(bookFile, metadata.author);
+  serialization::writeString(bookFile, metadata.language);
   serialization::writeString(bookFile, metadata.coverItemHref);
   serialization::writeString(bookFile, metadata.textReferenceHref);
   // CSS files
@@ -299,6 +301,7 @@ bool BookMetadataCache::load() {
 
   serialization::readString(bookFile, coreMetadata.title);
   serialization::readString(bookFile, coreMetadata.author);
+  serialization::readString(bookFile, coreMetadata.language);
   serialization::readString(bookFile, coreMetadata.coverItemHref);
   serialization::readString(bookFile, coreMetadata.textReferenceHref);
   // CSS files

lib/Epub/Epub/BookMetadataCache.h

@@ -10,6 +10,7 @@ class BookMetadataCache {
   struct BookMetadata {
     std::string title;
     std::string author;
+    std::string language;
     std::string coverItemHref;
     std::string textReferenceHref;
     std::vector<std::string> cssFiles;

lib/Epub/Epub/ParsedText.cpp

@@ -5,11 +5,50 @@
 #include <algorithm>
 #include <cmath>
 #include <functional>
+#include <iterator>
 #include <limits>
 #include <vector>
 
+#include "hyphenation/Hyphenator.h"
+
 constexpr int MAX_COST = std::numeric_limits<int>::max();
 
+namespace {
+
+// Soft hyphen byte pattern used throughout EPUBs (UTF-8 for U+00AD).
+constexpr char SOFT_HYPHEN_UTF8[] = "\xC2\xAD";
+constexpr size_t SOFT_HYPHEN_BYTES = 2;
+
+bool containsSoftHyphen(const std::string& word) { return word.find(SOFT_HYPHEN_UTF8) != std::string::npos; }
+
+// Removes every soft hyphen in-place so rendered glyphs match measured widths.
+void stripSoftHyphensInPlace(std::string& word) {
+  size_t pos = 0;
+  while ((pos = word.find(SOFT_HYPHEN_UTF8, pos)) != std::string::npos) {
+    word.erase(pos, SOFT_HYPHEN_BYTES);
+  }
+}
+
+// Returns the rendered width for a word while ignoring soft hyphen glyphs and optionally appending a visible hyphen.
+uint16_t measureWordWidth(const GfxRenderer& renderer, const int fontId, const std::string& word,
+                          const EpdFontFamily::Style style, const bool appendHyphen = false) {
+  const bool hasSoftHyphen = containsSoftHyphen(word);
+  if (!hasSoftHyphen && !appendHyphen) {
+    return renderer.getTextWidth(fontId, word.c_str(), style);
+  }
+
+  std::string sanitized = word;
+  if (hasSoftHyphen) {
+    stripSoftHyphensInPlace(sanitized);
+  }
+  if (appendHyphen) {
+    sanitized.push_back('-');
+  }
+  return renderer.getTextWidth(fontId, sanitized.c_str(), style);
+}
+
+}  // namespace
+
 void ParsedText::addWord(std::string word, const EpdFontFamily::Style fontStyle, const bool underline) {
   if (word.empty()) return;
 
@@ -26,10 +65,19 @@ void ParsedText::layoutAndExtractLines(const GfxRenderer& renderer, const int fo
     return;
   }
 
+  // Apply fixed transforms before any per-line layout work.
+  applyParagraphIndent();
+
   const int pageWidth = viewportWidth;
   const int spaceWidth = renderer.getSpaceWidth(fontId);
-  const auto wordWidths = calculateWordWidths(renderer, fontId);
-  const auto lineBreakIndices = computeLineBreaks(pageWidth, spaceWidth, wordWidths);
+  auto wordWidths = calculateWordWidths(renderer, fontId);
+  std::vector<size_t> lineBreakIndices;
+  if (hyphenationEnabled) {
+    // Use greedy layout that can split words mid-loop when a hyphenated prefix fits.
+    lineBreakIndices = computeHyphenatedLineBreaks(renderer, fontId, pageWidth, spaceWidth, wordWidths);
+  } else {
+    lineBreakIndices = computeLineBreaks(renderer, fontId, pageWidth, spaceWidth, wordWidths);
+  }
   const size_t lineCount = includeLastLine ? lineBreakIndices.size() : lineBreakIndices.size() - 1;
 
   for (size_t i = 0; i < lineCount; ++i) {
@@ -43,23 +91,12 @@ std::vector<uint16_t> ParsedText::calculateWordWidths(const GfxRenderer& rendere
   std::vector<uint16_t> wordWidths;
   wordWidths.reserve(totalWordCount);
 
-  // Apply text indent: either from CSS blockStyle or default em-space for justified/left-aligned
-  const bool shouldIndent = (style == TextBlock::JUSTIFIED || style == TextBlock::LEFT_ALIGN) && !extraParagraphSpacing;
-  if (blockStyle.textIndent > 0) {
-    // CSS text-indent is handled via first word width adjustment
-    // We'll add the indent value directly to the first word's width
-  } else if (shouldIndent) {
-    // Default: add em-space at the beginning of first word in paragraph to indent
-    std::string& first_word = words.front();
-    first_word.insert(0, "\xe2\x80\x83");
-  }
-
   auto wordsIt = words.begin();
   auto wordStylesIt = wordStyles.begin();
   bool isFirst = true;
 
   while (wordsIt != words.end()) {
-    uint16_t width = renderer.getTextWidth(fontId, wordsIt->c_str(), *wordStylesIt);
+    uint16_t width = measureWordWidth(renderer, fontId, *wordsIt, *wordStylesIt);
 
     // Add CSS text-indent to first word width
     if (isFirst && blockStyle.textIndent > 0 && shouldIndent) {
@@ -78,8 +115,21 @@ std::vector<uint16_t> ParsedText::calculateWordWidths(const GfxRenderer& rendere
   return wordWidths;
 }
 
-std::vector<size_t> ParsedText::computeLineBreaks(const int pageWidth, const int spaceWidth,
-                                                  const std::vector<uint16_t>& wordWidths) const {
+std::vector<size_t> ParsedText::computeLineBreaks(const GfxRenderer& renderer, const int fontId, const int pageWidth,
+                                                  const int spaceWidth, std::vector<uint16_t>& wordWidths) {
+  if (words.empty()) {
+    return {};
+  }
+
+  // Ensure any word that would overflow even as the first entry on a line is split using fallback hyphenation.
+  for (size_t i = 0; i < wordWidths.size(); ++i) {
+    while (wordWidths[i] > pageWidth) {
+      if (!hyphenateWordAtIndex(i, pageWidth, renderer, fontId, wordWidths, /*allowFallbackBreaks=*/true)) {
+        break;
+      }
+    }
+  }
+
   const size_t totalWordCount = words.size();
 
   // DP table to store the minimum badness (cost) of lines starting at index i
@@ -157,6 +207,141 @@ std::vector<size_t> ParsedText::computeLineBreaks(const int pageWidth, const int
   return lineBreakIndices;
 }
 
+void ParsedText::applyParagraphIndent() {
+  if (extraParagraphSpacing || words.empty()) {
+    return;
+  }
+
+  if (blockStyle.textIndent > 0) {
+    // CSS text-indent is handled via first word width adjustment
+    // We'll add the indent value directly to the first word's width
+  } else if (style == TextBlock::JUSTIFIED || style == TextBlock::LEFT_ALIGN) {
+    words.front().insert(0, "\xe2\x80\x83");
+  }
+}
+
+// Builds break indices while opportunistically splitting the word that would overflow the current line.
+std::vector<size_t> ParsedText::computeHyphenatedLineBreaks(const GfxRenderer& renderer, const int fontId,
+                                                            const int pageWidth, const int spaceWidth,
+                                                            std::vector<uint16_t>& wordWidths) {
+  std::vector<size_t> lineBreakIndices;
+  size_t currentIndex = 0;
+
+  while (currentIndex < wordWidths.size()) {
+    const size_t lineStart = currentIndex;
+    int lineWidth = 0;
+
+    // Consume as many words as possible for current line, splitting when prefixes fit
+    while (currentIndex < wordWidths.size()) {
+      const bool isFirstWord = currentIndex == lineStart;
+      const int spacing = isFirstWord ? 0 : spaceWidth;
+      const int candidateWidth = spacing + wordWidths[currentIndex];
+
+      // Word fits on current line
+      if (lineWidth + candidateWidth <= pageWidth) {
+        lineWidth += candidateWidth;
+        ++currentIndex;
+        continue;
+      }
+
+      // Word would overflow — try to split based on hyphenation points
+      const int availableWidth = pageWidth - lineWidth - spacing;
+      const bool allowFallbackBreaks = isFirstWord;  // Only for first word on line
+
+      if (availableWidth > 0 &&
+          hyphenateWordAtIndex(currentIndex, availableWidth, renderer, fontId, wordWidths, allowFallbackBreaks)) {
+        // Prefix now fits; append it to this line and move to next line
+        lineWidth += spacing + wordWidths[currentIndex];
+        ++currentIndex;
+        break;
+      }
+
+      // Could not split: force at least one word per line to avoid infinite loop
+      if (currentIndex == lineStart) {
+        lineWidth += candidateWidth;
+        ++currentIndex;
+      }
+      break;
+    }
+
+    lineBreakIndices.push_back(currentIndex);
+  }
+
+  return lineBreakIndices;
+}
+
+// Splits words[wordIndex] into prefix (adding a hyphen only when needed) and remainder when a legal breakpoint fits the
+// available width.
+bool ParsedText::hyphenateWordAtIndex(const size_t wordIndex, const int availableWidth, const GfxRenderer& renderer,
+                                      const int fontId, std::vector<uint16_t>& wordWidths,
+                                      const bool allowFallbackBreaks) {
+  // Guard against invalid indices or zero available width before attempting to split.
+  if (availableWidth <= 0 || wordIndex >= words.size()) {
+    return false;
+  }
+
+  // Get iterators to target word and style.
+  auto wordIt = words.begin();
+  auto styleIt = wordStyles.begin();
+  std::advance(wordIt, wordIndex);
+  std::advance(styleIt, wordIndex);
+
+  const std::string& word = *wordIt;
+  const auto style = *styleIt;
+
+  // Collect candidate breakpoints (byte offsets and hyphen requirements).
+  auto breakInfos = Hyphenator::breakOffsets(word, allowFallbackBreaks);
+  if (breakInfos.empty()) {
+    return false;
+  }
+
+  size_t chosenOffset = 0;
+  int chosenWidth = -1;
+  bool chosenNeedsHyphen = true;
+
+  // Iterate over each legal breakpoint and retain the widest prefix that still fits.
+  for (const auto& info : breakInfos) {
+    const size_t offset = info.byteOffset;
+    if (offset == 0 || offset >= word.size()) {
+      continue;
+    }
+
+    const bool needsHyphen = info.requiresInsertedHyphen;
+    const int prefixWidth = measureWordWidth(renderer, fontId, word.substr(0, offset), style, needsHyphen);
+    if (prefixWidth > availableWidth || prefixWidth <= chosenWidth) {
+      continue;  // Skip if too wide or not an improvement
+    }
+
+    chosenWidth = prefixWidth;
+    chosenOffset = offset;
+    chosenNeedsHyphen = needsHyphen;
+  }
+
+  if (chosenWidth < 0) {
+    // No hyphenation point produced a prefix that fits in the remaining space.
+    return false;
+  }
+
+  // Split the word at the selected breakpoint and append a hyphen if required.
+  std::string remainder = word.substr(chosenOffset);
+  wordIt->resize(chosenOffset);
+  if (chosenNeedsHyphen) {
+    wordIt->push_back('-');
+  }
+
+  // Insert the remainder word (with matching style) directly after the prefix.
+  auto insertWordIt = std::next(wordIt);
+  auto insertStyleIt = std::next(styleIt);
+  words.insert(insertWordIt, remainder);
+  wordStyles.insert(insertStyleIt, style);
+
+  // Update cached widths to reflect the new prefix/remainder pairing.
+  wordWidths[wordIndex] = static_cast<uint16_t>(chosenWidth);
+  const uint16_t remainderWidth = measureWordWidth(renderer, fontId, remainder, style);
+  wordWidths.insert(wordWidths.begin() + wordIndex + 1, remainderWidth);
+  return true;
+}
+
 void ParsedText::extractLine(const size_t breakIndex, const int pageWidth, const int spaceWidth,
                              const std::vector<uint16_t>& wordWidths, const std::vector<size_t>& lineBreakIndices,
                              const std::function<void(std::shared_ptr<TextBlock>)>& processLine) {
@@ -212,6 +397,12 @@ void ParsedText::extractLine(const size_t breakIndex, const int pageWidth, const
   std::list<bool> lineWordUnderlines;
   lineWordUnderlines.splice(lineWordUnderlines.begin(), wordUnderlines, wordUnderlines.begin(), wordUnderlineEndIt);
 
+  for (auto& word : lineWords) {
+    if (containsSoftHyphen(word)) {
+      stripSoftHyphensInPlace(word);
+    }
+  }
+
   processLine(std::make_shared<TextBlock>(std::move(lineWords), std::move(lineXPos), std::move(lineWordStyles), style,
                                           blockStyle, std::move(lineWordUnderlines)));
 }

lib/Epub/Epub/ParsedText.h

@@ -20,8 +20,15 @@ class ParsedText {
   TextBlock::Style style;
   BlockStyle blockStyle;
   bool extraParagraphSpacing;
+  bool hyphenationEnabled;
 
-  std::vector<size_t> computeLineBreaks(int pageWidth, int spaceWidth, const std::vector<uint16_t>& wordWidths) const;
+  void applyParagraphIndent();
+  std::vector<size_t> computeLineBreaks(const GfxRenderer& renderer, int fontId, int pageWidth, int spaceWidth,
+                                        std::vector<uint16_t>& wordWidths);
+  std::vector<size_t> computeHyphenatedLineBreaks(const GfxRenderer& renderer, int fontId, int pageWidth,
+                                                  int spaceWidth, std::vector<uint16_t>& wordWidths);
+  bool hyphenateWordAtIndex(size_t wordIndex, int availableWidth, const GfxRenderer& renderer, int fontId,
+                            std::vector<uint16_t>& wordWidths, bool allowFallbackBreaks);
   void extractLine(size_t breakIndex, int pageWidth, int spaceWidth, const std::vector<uint16_t>& wordWidths,
                    const std::vector<size_t>& lineBreakIndices,
                    const std::function<void(std::shared_ptr<TextBlock>)>& processLine);
@@ -29,8 +36,9 @@ class ParsedText {
 
  public:
   explicit ParsedText(const TextBlock::Style style, const bool extraParagraphSpacing,
-                      const BlockStyle& blockStyle = BlockStyle())
-      : style(style), blockStyle(blockStyle), extraParagraphSpacing(extraParagraphSpacing) {}
+                      const bool hyphenationEnabled = false,
+                      const BlockStyle& blockStyle = BlockStyle()))
+      : style(style), extraParagraphSpacing(extraParagraphSpacing), hyphenationEnabled(hyphenationEnabled, blockStyle(blockStyle)) {}
   ~ParsedText() = default;
 
   void addWord(std::string word, EpdFontFamily::Style fontStyle, bool underline = false);
@@ -43,4 +51,4 @@ class ParsedText {
   void layoutAndExtractLines(const GfxRenderer& renderer, int fontId, uint16_t viewportWidth,
                              const std::function<void(std::shared_ptr<TextBlock>)>& processLine,
                              bool includeLastLine = true);
-};
+};

lib/Epub/Epub/Section.cpp

@@ -4,12 +4,14 @@
 #include <Serialization.h>
 
 #include "Page.h"
+#include "hyphenation/Hyphenator.h"
 #include "parsers/ChapterHtmlSlimParser.h"
 
 namespace {
 constexpr uint8_t SECTION_FILE_VERSION = 10;
 constexpr uint32_t HEADER_SIZE = sizeof(uint8_t) + sizeof(int) + sizeof(float) + sizeof(bool) + sizeof(uint8_t) +
-                                 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t);
+                                 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint16_t) + sizeof(bool) +
+                                 sizeof(uint32_t);
 }  // namespace
 
 uint32_t Section::onPageComplete(std::unique_ptr<Page> page) {
@@ -31,14 +33,15 @@ uint32_t Section::onPageComplete(std::unique_ptr<Page> page) {
 
 void Section::writeSectionFileHeader(const int fontId, const float lineCompression, const bool extraParagraphSpacing,
                                      const uint8_t paragraphAlignment, const uint16_t viewportWidth,
-                                     const uint16_t viewportHeight) {
+                                     const uint16_t viewportHeight, const bool hyphenationEnabled) {
   if (!file) {
     Serial.printf("[%lu] [SCT] File not open for writing header\n", millis());
     return;
   }
   static_assert(HEADER_SIZE == sizeof(SECTION_FILE_VERSION) + sizeof(fontId) + sizeof(lineCompression) +
                                    sizeof(extraParagraphSpacing) + sizeof(paragraphAlignment) + sizeof(viewportWidth) +
-                                   sizeof(viewportHeight) + sizeof(pageCount) + sizeof(uint32_t),
+                                   sizeof(viewportHeight) + sizeof(pageCount) + sizeof(hyphenationEnabled) +
+                                   sizeof(uint32_t),
                 "Header size mismatch");
   serialization::writePod(file, SECTION_FILE_VERSION);
   serialization::writePod(file, fontId);
@@ -47,13 +50,14 @@ void Section::writeSectionFileHeader(const int fontId, const float lineCompressi
   serialization::writePod(file, paragraphAlignment);
   serialization::writePod(file, viewportWidth);
   serialization::writePod(file, viewportHeight);
+  serialization::writePod(file, hyphenationEnabled);
   serialization::writePod(file, pageCount);  // Placeholder for page count (will be initially 0 when written)
   serialization::writePod(file, static_cast<uint32_t>(0));  // Placeholder for LUT offset
 }
 
 bool Section::loadSectionFile(const int fontId, const float lineCompression, const bool extraParagraphSpacing,
                               const uint8_t paragraphAlignment, const uint16_t viewportWidth,
-                              const uint16_t viewportHeight) {
+                              const uint16_t viewportHeight, const bool hyphenationEnabled) {
   if (!SdMan.openFileForRead("SCT", filePath, file)) {
     return false;
   }
@@ -74,16 +78,19 @@ bool Section::loadSectionFile(const int fontId, const float lineCompression, con
     float fileLineCompression;
     bool fileExtraParagraphSpacing;
     uint8_t fileParagraphAlignment;
+    bool fileHyphenationEnabled;
     serialization::readPod(file, fileFontId);
     serialization::readPod(file, fileLineCompression);
     serialization::readPod(file, fileExtraParagraphSpacing);
     serialization::readPod(file, fileParagraphAlignment);
     serialization::readPod(file, fileViewportWidth);
     serialization::readPod(file, fileViewportHeight);
+    serialization::readPod(file, fileHyphenationEnabled);
 
     if (fontId != fileFontId || lineCompression != fileLineCompression ||
         extraParagraphSpacing != fileExtraParagraphSpacing || paragraphAlignment != fileParagraphAlignment ||
-        viewportWidth != fileViewportWidth || viewportHeight != fileViewportHeight) {
+        viewportWidth != fileViewportWidth || viewportHeight != fileViewportHeight ||
+        hyphenationEnabled != fileHyphenationEnabled) {
       file.close();
       Serial.printf("[%lu] [SCT] Deserialization failed: Parameters do not match\n", millis());
       clearCache();
@@ -115,7 +122,8 @@ bool Section::clearCache() const {
 
 bool Section::createSectionFile(const int fontId, const float lineCompression, const bool extraParagraphSpacing,
                                 const uint8_t paragraphAlignment, const uint16_t viewportWidth,
-                                const uint16_t viewportHeight, const std::function<void()>& progressSetupFn,
+                                const uint16_t viewportHeight, const bool hyphenationEnabled,
+                                const std::function<void()>& progressSetupFn,
                                 const std::function<void(int)>& progressFn) {
   constexpr uint32_t MIN_SIZE_FOR_PROGRESS = 50 * 1024;  // 50KB
   const auto localPath = epub->getSpineItem(spineIndex).href;
@@ -172,14 +180,15 @@ bool Section::createSectionFile(const int fontId, const float lineCompression, c
     return false;
   }
   writeSectionFileHeader(fontId, lineCompression, extraParagraphSpacing, paragraphAlignment, viewportWidth,
-                         viewportHeight);
+                         viewportHeight, hyphenationEnabled);
   std::vector<uint32_t> lut = {};
 
   ChapterHtmlSlimParser visitor(
       tmpHtmlPath, renderer, fontId, lineCompression, extraParagraphSpacing, paragraphAlignment, viewportWidth,
-      viewportHeight,
-      [this, &lut](std::unique_ptr<Page> page) { lut.emplace_back(this->onPageComplete(std::move(page))); }, progressFn,
-      epub->getCssParser());
+      viewportHeight, hyphenationEnabled,
+      [this, &lut](std::unique_ptr<Page> page) { lut.emplace_back(this->onPageComplete(std::move(page))); },
+      progressFn, epub->getCssParser());
+  Hyphenator::setPreferredLanguage(epub->getLanguage());
   success = visitor.parseAndBuildPages();
 
   SdMan.remove(tmpHtmlPath.c_str());

lib/Epub/Epub/Section.h

@@ -15,7 +15,7 @@ class Section {
   FsFile file;
 
   void writeSectionFileHeader(int fontId, float lineCompression, bool extraParagraphSpacing, uint8_t paragraphAlignment,
-                              uint16_t viewportWidth, uint16_t viewportHeight);
+                              uint16_t viewportWidth, uint16_t viewportHeight, bool hyphenationEnabled);
   uint32_t onPageComplete(std::unique_ptr<Page> page);
 
  public:
@@ -29,10 +29,10 @@ class Section {
         filePath(epub->getCachePath() + "/sections/" + std::to_string(spineIndex) + ".bin") {}
   ~Section() = default;
   bool loadSectionFile(int fontId, float lineCompression, bool extraParagraphSpacing, uint8_t paragraphAlignment,
-                       uint16_t viewportWidth, uint16_t viewportHeight);
+                       uint16_t viewportWidth, uint16_t viewportHeight, bool hyphenationEnabled);
   bool clearCache() const;
   bool createSectionFile(int fontId, float lineCompression, bool extraParagraphSpacing, uint8_t paragraphAlignment,
-                         uint16_t viewportWidth, uint16_t viewportHeight,
+                         uint16_t viewportWidth, uint16_t viewportHeight, bool hyphenationEnabled,
                          const std::function<void()>& progressSetupFn = nullptr,
                          const std::function<void(int)>& progressFn = nullptr);
   std::unique_ptr<Page> loadPageFromSectionFile();

lib/Epub/Epub/hyphenation/HyphenationCommon.cpp

@@ -0,0 +1,179 @@
+#include "HyphenationCommon.h"
+
+#include <Utf8.h>
+
+namespace {
+
+// Convert Latin uppercase letters (ASCII plus Latin-1 supplement) to lowercase
+uint32_t toLowerLatinImpl(const uint32_t cp) {
+  if (cp >= 'A' && cp <= 'Z') {
+    return cp - 'A' + 'a';
+  }
+  if ((cp >= 0x00C0 && cp <= 0x00D6) || (cp >= 0x00D8 && cp <= 0x00DE)) {
+    return cp + 0x20;
+  }
+
+  switch (cp) {
+    case 0x0152:      // Œ
+      return 0x0153;  // œ
+    case 0x0178:      // Ÿ
+      return 0x00FF;  // ÿ
+    case 0x1E9E:      // ẞ
+      return 0x00DF;  // ß
+    default:
+      return cp;
+  }
+}
+
+// Convert Cyrillic uppercase letters to lowercase
+// Cyrillic uppercase range 0x0410-0x042F maps to lowercase by adding 0x20
+// Special case: Cyrillic capital IO (0x0401) maps to lowercase io (0x0451)
+uint32_t toLowerCyrillicImpl(const uint32_t cp) {
+  if (cp >= 0x0410 && cp <= 0x042F) {
+    return cp + 0x20;
+  }
+  if (cp == 0x0401) {
+    return 0x0451;
+  }
+  return cp;
+}
+
+}  // namespace
+
+uint32_t toLowerLatin(const uint32_t cp) { return toLowerLatinImpl(cp); }
+
+uint32_t toLowerCyrillic(const uint32_t cp) { return toLowerCyrillicImpl(cp); }
+
+bool isLatinLetter(const uint32_t cp) {
+  if ((cp >= 'A' && cp <= 'Z') || (cp >= 'a' && cp <= 'z')) {
+    return true;
+  }
+
+  if (((cp >= 0x00C0 && cp <= 0x00D6) || (cp >= 0x00D8 && cp <= 0x00F6) || (cp >= 0x00F8 && cp <= 0x00FF)) &&
+      cp != 0x00D7 && cp != 0x00F7) {
+    return true;
+  }
+
+  switch (cp) {
+    case 0x0152:  // Œ
+    case 0x0153:  // œ
+    case 0x0178:  // Ÿ
+    case 0x1E9E:  // ẞ
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool isCyrillicLetter(const uint32_t cp) { return (cp >= 0x0400 && cp <= 0x052F); }
+
+bool isAlphabetic(const uint32_t cp) { return isLatinLetter(cp) || isCyrillicLetter(cp); }
+
+bool isPunctuation(const uint32_t cp) {
+  switch (cp) {
+    case '-':
+    case '.':
+    case ',':
+    case '!':
+    case '?':
+    case ';':
+    case ':':
+    case '"':
+    case '\'':
+    case ')':
+    case '(':
+    case 0x00AB:  // «
+    case 0x00BB:  // »
+    case 0x2018:  // ‘
+    case 0x2019:  // ’
+    case 0x201C:  // “
+    case 0x201D:  // ”
+    case 0x00A0:  // no-break space
+    case '{':
+    case '}':
+    case '[':
+    case ']':
+    case '/':
+    case 0x203A:  // ›
+    case 0x2026:  // …
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool isAsciiDigit(const uint32_t cp) { return cp >= '0' && cp <= '9'; }
+
+bool isExplicitHyphen(const uint32_t cp) {
+  switch (cp) {
+    case '-':
+    case 0x00AD:  // soft hyphen
+    case 0x058A:  // Armenian hyphen
+    case 0x2010:  // hyphen
+    case 0x2011:  // non-breaking hyphen
+    case 0x2012:  // figure dash
+    case 0x2013:  // en dash
+    case 0x2014:  // em dash
+    case 0x2015:  // horizontal bar
+    case 0x2043:  // hyphen bullet
+    case 0x207B:  // superscript minus
+    case 0x208B:  // subscript minus
+    case 0x2212:  // minus sign
+    case 0x2E17:  // double oblique hyphen
+    case 0x2E3A:  // two-em dash
+    case 0x2E3B:  // three-em dash
+    case 0xFE58:  // small em dash
+    case 0xFE63:  // small hyphen-minus
+    case 0xFF0D:  // fullwidth hyphen-minus
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool isSoftHyphen(const uint32_t cp) { return cp == 0x00AD; }
+
+void trimSurroundingPunctuationAndFootnote(std::vector<CodepointInfo>& cps) {
+  if (cps.empty()) {
+    return;
+  }
+
+  // Remove trailing footnote references like [12], even if punctuation trails after the closing bracket.
+  if (cps.size() >= 3) {
+    int end = static_cast<int>(cps.size()) - 1;
+    while (end >= 0 && isPunctuation(cps[end].value)) {
+      --end;
+    }
+    int pos = end;
+    if (pos >= 0 && isAsciiDigit(cps[pos].value)) {
+      while (pos >= 0 && isAsciiDigit(cps[pos].value)) {
+        --pos;
+      }
+      if (pos >= 0 && cps[pos].value == '[' && end - pos > 1) {
+        cps.erase(cps.begin() + pos, cps.end());
+      }
+    }
+  }
+
+  while (!cps.empty() && isPunctuation(cps.front().value)) {
+    cps.erase(cps.begin());
+  }
+  while (!cps.empty() && isPunctuation(cps.back().value)) {
+    cps.pop_back();
+  }
+}
+
+std::vector<CodepointInfo> collectCodepoints(const std::string& word) {
+  std::vector<CodepointInfo> cps;
+  cps.reserve(word.size());
+
+  const unsigned char* base = reinterpret_cast<const unsigned char*>(word.c_str());
+  const unsigned char* ptr = base;
+  while (*ptr != 0) {
+    const unsigned char* current = ptr;
+    const uint32_t cp = utf8NextCodepoint(&ptr);
+    cps.push_back({cp, static_cast<size_t>(current - base)});
+  }
+
+  return cps;
+}

lib/Epub/Epub/hyphenation/HyphenationCommon.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+#include <string>
+#include <vector>
+
+struct CodepointInfo {
+  uint32_t value;
+  size_t byteOffset;
+};
+
+uint32_t toLowerLatin(uint32_t cp);
+uint32_t toLowerCyrillic(uint32_t cp);
+
+bool isLatinLetter(uint32_t cp);
+bool isCyrillicLetter(uint32_t cp);
+
+bool isAlphabetic(uint32_t cp);
+bool isPunctuation(uint32_t cp);
+bool isAsciiDigit(uint32_t cp);
+bool isExplicitHyphen(uint32_t cp);
+bool isSoftHyphen(uint32_t cp);
+void trimSurroundingPunctuationAndFootnote(std::vector<CodepointInfo>& cps);
+std::vector<CodepointInfo> collectCodepoints(const std::string& word);

lib/Epub/Epub/hyphenation/Hyphenator.cpp

@@ -0,0 +1,97 @@
+#include "Hyphenator.h"
+
+#include <vector>
+
+#include "HyphenationCommon.h"
+#include "LanguageRegistry.h"
+
+const LanguageHyphenator* Hyphenator::cachedHyphenator_ = nullptr;
+
+namespace {
+
+// Maps a BCP-47 language tag to a language-specific hyphenator.
+const LanguageHyphenator* hyphenatorForLanguage(const std::string& langTag) {
+  if (langTag.empty()) return nullptr;
+
+  // Extract primary subtag and normalize to lowercase (e.g., "en-US" -> "en").
+  std::string primary;
+  primary.reserve(langTag.size());
+  for (char c : langTag) {
+    if (c == '-' || c == '_') break;
+    if (c >= 'A' && c <= 'Z') c = static_cast<char>(c - 'A' + 'a');
+    primary.push_back(c);
+  }
+  if (primary.empty()) return nullptr;
+
+  return getLanguageHyphenatorForPrimaryTag(primary);
+}
+
+// Maps a codepoint index back to its byte offset inside the source word.
+size_t byteOffsetForIndex(const std::vector<CodepointInfo>& cps, const size_t index) {
+  return (index < cps.size()) ? cps[index].byteOffset : (cps.empty() ? 0 : cps.back().byteOffset);
+}
+
+// Builds a vector of break information from explicit hyphen markers in the given codepoints.
+std::vector<Hyphenator::BreakInfo> buildExplicitBreakInfos(const std::vector<CodepointInfo>& cps) {
+  std::vector<Hyphenator::BreakInfo> breaks;
+
+  // Scan every codepoint looking for explicit/soft hyphen markers that are surrounded by letters.
+  for (size_t i = 1; i + 1 < cps.size(); ++i) {
+    const uint32_t cp = cps[i].value;
+    if (!isExplicitHyphen(cp) || !isAlphabetic(cps[i - 1].value) || !isAlphabetic(cps[i + 1].value)) {
+      continue;
+    }
+    // Offset points to the next codepoint so rendering starts after the hyphen marker.
+    breaks.push_back({cps[i + 1].byteOffset, isSoftHyphen(cp)});
+  }
+
+  return breaks;
+}
+
+}  // namespace
+
+std::vector<Hyphenator::BreakInfo> Hyphenator::breakOffsets(const std::string& word, const bool includeFallback) {
+  if (word.empty()) {
+    return {};
+  }
+
+  // Convert to codepoints and normalize word boundaries.
+  auto cps = collectCodepoints(word);
+  trimSurroundingPunctuationAndFootnote(cps);
+  const auto* hyphenator = cachedHyphenator_;
+
+  // Explicit hyphen markers (soft or hard) take precedence over language breaks.
+  auto explicitBreakInfos = buildExplicitBreakInfos(cps);
+  if (!explicitBreakInfos.empty()) {
+    return explicitBreakInfos;
+  }
+
+  // Ask language hyphenator for legal break points.
+  std::vector<size_t> indexes;
+  if (hyphenator) {
+    indexes = hyphenator->breakIndexes(cps);
+  }
+
+  // Only add fallback breaks if needed
+  if (includeFallback && indexes.empty()) {
+    const size_t minPrefix = hyphenator ? hyphenator->minPrefix() : LiangWordConfig::kDefaultMinPrefix;
+    const size_t minSuffix = hyphenator ? hyphenator->minSuffix() : LiangWordConfig::kDefaultMinSuffix;
+    for (size_t idx = minPrefix; idx + minSuffix <= cps.size(); ++idx) {
+      indexes.push_back(idx);
+    }
+  }
+
+  if (indexes.empty()) {
+    return {};
+  }
+
+  std::vector<Hyphenator::BreakInfo> breaks;
+  breaks.reserve(indexes.size());
+  for (const size_t idx : indexes) {
+    breaks.push_back({byteOffsetForIndex(cps, idx), true});
+  }
+
+  return breaks;
+}
+
+void Hyphenator::setPreferredLanguage(const std::string& lang) { cachedHyphenator_ = hyphenatorForLanguage(lang); }

lib/Epub/Epub/hyphenation/Hyphenator.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <cstddef>
+#include <string>
+#include <vector>
+
+class LanguageHyphenator;
+
+class Hyphenator {
+ public:
+  struct BreakInfo {
+    size_t byteOffset;
+    bool requiresInsertedHyphen;
+  };
+  // Returns byte offsets where the word may be hyphenated. When includeFallback is true, all positions obeying the
+  // minimum prefix/suffix constraints are returned even if no language-specific rule matches.
+  static std::vector<BreakInfo> breakOffsets(const std::string& word, bool includeFallback);
+
+  // Provide a publication-level language hint (e.g. "en", "en-US", "ru") used to select hyphenation rules.
+  static void setPreferredLanguage(const std::string& lang);
+
+ private:
+  static const LanguageHyphenator* cachedHyphenator_;
+};

lib/Epub/Epub/hyphenation/LanguageHyphenator.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "LiangHyphenation.h"
+
+// Generic Liang-backed hyphenator that stores pattern metadata plus language-specific helpers.
+class LanguageHyphenator {
+ public:
+  LanguageHyphenator(const SerializedHyphenationPatterns& patterns, bool (*isLetterFn)(uint32_t),
+                     uint32_t (*toLowerFn)(uint32_t), size_t minPrefix = LiangWordConfig::kDefaultMinPrefix,
+                     size_t minSuffix = LiangWordConfig::kDefaultMinSuffix)
+      : patterns_(patterns), config_(isLetterFn, toLowerFn, minPrefix, minSuffix) {}
+
+  std::vector<size_t> breakIndexes(const std::vector<CodepointInfo>& cps) const {
+    return liangBreakIndexes(cps, patterns_, config_);
+  }
+
+  size_t minPrefix() const { return config_.minPrefix; }
+  size_t minSuffix() const { return config_.minSuffix; }
+
+ protected:
+  const SerializedHyphenationPatterns& patterns_;
+  LiangWordConfig config_;
+};

lib/Epub/Epub/hyphenation/LanguageRegistry.cpp

@@ -0,0 +1,42 @@
+#include "LanguageRegistry.h"
+
+#include <algorithm>
+#include <array>
+
+#include "HyphenationCommon.h"
+#include "generated/hyph-de.trie.h"
+#include "generated/hyph-en.trie.h"
+#include "generated/hyph-fr.trie.h"
+#include "generated/hyph-ru.trie.h"
+
+namespace {
+
+// English hyphenation patterns (3/3 minimum prefix/suffix length)
+LanguageHyphenator englishHyphenator(en_us_patterns, isLatinLetter, toLowerLatin, 3, 3);
+LanguageHyphenator frenchHyphenator(fr_patterns, isLatinLetter, toLowerLatin);
+LanguageHyphenator germanHyphenator(de_patterns, isLatinLetter, toLowerLatin);
+LanguageHyphenator russianHyphenator(ru_ru_patterns, isCyrillicLetter, toLowerCyrillic);
+
+using EntryArray = std::array<LanguageEntry, 4>;
+
+const EntryArray& entries() {
+  static const EntryArray kEntries = {{{"english", "en", &englishHyphenator},
+                                       {"french", "fr", &frenchHyphenator},
+                                       {"german", "de", &germanHyphenator},
+                                       {"russian", "ru", &russianHyphenator}}};
+  return kEntries;
+}
+
+}  // namespace
+
+const LanguageHyphenator* getLanguageHyphenatorForPrimaryTag(const std::string& primaryTag) {
+  const auto& allEntries = entries();
+  const auto it = std::find_if(allEntries.begin(), allEntries.end(),
+                               [&primaryTag](const LanguageEntry& entry) { return primaryTag == entry.primaryTag; });
+  return (it != allEntries.end()) ? it->hyphenator : nullptr;
+}
+
+LanguageEntryView getLanguageEntries() {
+  const auto& allEntries = entries();
+  return LanguageEntryView{allEntries.data(), allEntries.size()};
+}

lib/Epub/Epub/hyphenation/LanguageRegistry.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <cstddef>
+#include <string>
+
+#include "LanguageHyphenator.h"
+
+struct LanguageEntry {
+  const char* cliName;
+  const char* primaryTag;
+  const LanguageHyphenator* hyphenator;
+};
+
+struct LanguageEntryView {
+  const LanguageEntry* data;
+  size_t size;
+
+  const LanguageEntry* begin() const { return data; }
+  const LanguageEntry* end() const { return data + size; }
+};
+
+// Returns the Liang-backed hyphenator for a given primary language tag (e.g., "en", "fr").
+const LanguageHyphenator* getLanguageHyphenatorForPrimaryTag(const std::string& primaryTag);
+
+// Exposes the list of supported languages primarily for tooling/tests.
+LanguageEntryView getLanguageEntries();

lib/Epub/Epub/hyphenation/LiangHyphenation.cpp

@@ -0,0 +1,405 @@
+#include "LiangHyphenation.h"
+
+#include <algorithm>
+#include <vector>
+
+/*
+ * Liang hyphenation pipeline overview (Typst-style binary trie variant)
+ * --------------------------------------------------------------------
+ * 1.  Input normalization (buildAugmentedWord)
+ *     - Accepts a vector of CodepointInfo structs emitted by the EPUB text
+ *       parser. Each codepoint is validated with LiangWordConfig::isLetter so
+ *       we abort early on digits, punctuation, etc. If the word is valid we
+ *       build an "augmented" byte sequence: leading '.', lowercase UTF-8 bytes
+ *       for every letter, then a trailing '.'. While doing this we capture the
+ *       UTF-8 byte offset for each character and a reverse lookup table that
+ *       maps UTF-8 byte indexes back to codepoint indexes. This lets the rest
+ *       of the algorithm stay byte-oriented (matching the serialized automaton)
+ *       while still emitting hyphen positions in codepoint space.
+ *
+ * 2.  Automaton decoding
+ *     - SerializedHyphenationPatterns stores a contiguous blob generated from
+ *       Typst's binary tries. The first 4 bytes contain the root offset. Each
+ *       node packs transitions, variable-stride relative offsets to child
+ *       nodes, and an optional pointer into a shared "levels" list. We parse
+ *       that layout lazily via decodeState/transition, keeping everything in
+ *       flash memory; no heap allocations besides the stack-local AutomatonState
+ *       structs. getAutomaton caches parseAutomaton results per blob pointer so
+ *       multiple words hitting the same language only pay the cost once.
+ *
+ * 3.  Pattern application
+ *     - We walk the augmented bytes left-to-right. For each starting byte we
+ *       stream transitions through the trie, terminating when a transition
+ *       fails. Whenever a node exposes level data we expand the packed
+ *       "dist+level" bytes: `dist` is the delta (in UTF-8 bytes) from the
+ *       starting cursor and `level` is the Liang priority digit. Using the
+ *       byte→codepoint lookup we mark the corresponding index in `scores`.
+ *       Scores are only updated if the new level is higher, mirroring Liang's
+ *       "max digit wins" rule.
+ *
+ * 4.  Output filtering
+ *     - collectBreakIndexes converts odd-valued score entries back to codepoint
+ *       break positions while enforcing `minPrefix`/`minSuffix` constraints from
+ *       LiangWordConfig. The caller (language-specific hyphenators) can then
+ *       translate these indexes into renderer glyph offsets, page layout data,
+ *       etc.
+ *
+ * Keeping the entire algorithm small and deterministic is critical on the
+ * ESP32-C3: we avoid recursion, dynamic allocations per node, or copying the
+ * trie. All lookups stay within the generated blob, which lives in flash, and
+ * the working buffers (augmented bytes/scores) scale with the word length rather
+ * than the pattern corpus.
+ */
+
+namespace {
+
+struct AugmentedWord {
+  std::vector<uint8_t> bytes;
+  std::vector<size_t> charByteOffsets;
+  std::vector<int32_t> byteToCharIndex;
+
+  bool empty() const { return bytes.empty(); }
+  size_t charCount() const { return charByteOffsets.size(); }
+};
+
+// Encode a single Unicode codepoint into UTF-8 and append to the provided buffer.
+size_t encodeUtf8(uint32_t cp, std::vector<uint8_t>& out) {
+  if (cp <= 0x7Fu) {
+    out.push_back(static_cast<uint8_t>(cp));
+    return 1;
+  }
+  if (cp <= 0x7FFu) {
+    out.push_back(static_cast<uint8_t>(0xC0u | ((cp >> 6) & 0x1Fu)));
+    out.push_back(static_cast<uint8_t>(0x80u | (cp & 0x3Fu)));
+    return 2;
+  }
+  if (cp <= 0xFFFFu) {
+    out.push_back(static_cast<uint8_t>(0xE0u | ((cp >> 12) & 0x0Fu)));
+    out.push_back(static_cast<uint8_t>(0x80u | ((cp >> 6) & 0x3Fu)));
+    out.push_back(static_cast<uint8_t>(0x80u | (cp & 0x3Fu)));
+    return 3;
+  }
+  out.push_back(static_cast<uint8_t>(0xF0u | ((cp >> 18) & 0x07u)));
+  out.push_back(static_cast<uint8_t>(0x80u | ((cp >> 12) & 0x3Fu)));
+  out.push_back(static_cast<uint8_t>(0x80u | ((cp >> 6) & 0x3Fu)));
+  out.push_back(static_cast<uint8_t>(0x80u | (cp & 0x3Fu)));
+  return 4;
+}
+
+// Build the dotted, lowercase UTF-8 representation plus lookup tables.
+AugmentedWord buildAugmentedWord(const std::vector<CodepointInfo>& cps, const LiangWordConfig& config) {
+  AugmentedWord word;
+  if (cps.empty()) {
+    return word;
+  }
+
+  word.bytes.reserve(cps.size() * 2 + 2);
+  word.charByteOffsets.reserve(cps.size() + 2);
+
+  word.charByteOffsets.push_back(0);
+  word.bytes.push_back('.');
+
+  for (const auto& info : cps) {
+    if (!config.isLetter(info.value)) {
+      word.bytes.clear();
+      word.charByteOffsets.clear();
+      word.byteToCharIndex.clear();
+      return word;
+    }
+    word.charByteOffsets.push_back(word.bytes.size());
+    encodeUtf8(config.toLower(info.value), word.bytes);
+  }
+
+  word.charByteOffsets.push_back(word.bytes.size());
+  word.bytes.push_back('.');
+
+  word.byteToCharIndex.assign(word.bytes.size(), -1);
+  for (size_t i = 0; i < word.charByteOffsets.size(); ++i) {
+    const size_t offset = word.charByteOffsets[i];
+    if (offset < word.byteToCharIndex.size()) {
+      word.byteToCharIndex[offset] = static_cast<int32_t>(i);
+    }
+  }
+  return word;
+}
+
+// Decoded view of a single trie node pulled straight out of the serialized blob.
+// - transitions: contiguous list of next-byte values
+// - targets: packed relative offsets (1/2/3 bytes) for each transition
+// - levels: optional pointer into the global levels list with packed dist/level pairs
+struct AutomatonState {
+  const uint8_t* data = nullptr;
+  size_t size = 0;
+  size_t addr = 0;
+  uint8_t stride = 1;
+  size_t childCount = 0;
+  const uint8_t* transitions = nullptr;
+  const uint8_t* targets = nullptr;
+  const uint8_t* levels = nullptr;
+  size_t levelsLen = 0;
+
+  bool valid() const { return data != nullptr; }
+};
+
+// Lightweight descriptor for the entire embedded automaton.
+// The blob format is:
+//   [0..3]  - big-endian root offset
+//   [4....] - node heap containing variable-sized headers + transition data
+struct EmbeddedAutomaton {
+  const uint8_t* data = nullptr;
+  size_t size = 0;
+  uint32_t rootOffset = 0;
+
+  bool valid() const { return data != nullptr && size >= 4 && rootOffset < size; }
+};
+
+// Decode the serialized automaton header and root offset.
+EmbeddedAutomaton parseAutomaton(const SerializedHyphenationPatterns& patterns) {
+  EmbeddedAutomaton automaton;
+  if (!patterns.data || patterns.size < 4) {
+    return automaton;
+  }
+
+  automaton.data = patterns.data;
+  automaton.size = patterns.size;
+  automaton.rootOffset = (static_cast<uint32_t>(patterns.data[0]) << 24) |
+                         (static_cast<uint32_t>(patterns.data[1]) << 16) |
+                         (static_cast<uint32_t>(patterns.data[2]) << 8) | static_cast<uint32_t>(patterns.data[3]);
+  if (automaton.rootOffset >= automaton.size) {
+    automaton.data = nullptr;
+    automaton.size = 0;
+  }
+  return automaton;
+}
+
+// Cache parsed automata per blob pointer to avoid reparsing.
+const EmbeddedAutomaton& getAutomaton(const SerializedHyphenationPatterns& patterns) {
+  struct CacheEntry {
+    const SerializedHyphenationPatterns* key;
+    EmbeddedAutomaton automaton;
+  };
+  static std::vector<CacheEntry> cache;
+
+  for (const auto& entry : cache) {
+    if (entry.key == &patterns) {
+      return entry.automaton;
+    }
+  }
+
+  cache.push_back({&patterns, parseAutomaton(patterns)});
+  return cache.back().automaton;
+}
+
+// Interpret the node located at `addr`, returning transition metadata.
+AutomatonState decodeState(const EmbeddedAutomaton& automaton, size_t addr) {
+  AutomatonState state;
+  if (!automaton.valid() || addr >= automaton.size) {
+    return state;
+  }
+
+  const uint8_t* base = automaton.data + addr;
+  size_t remaining = automaton.size - addr;
+  size_t pos = 0;
+
+  const uint8_t header = base[pos++];
+  // Header layout (bits):
+  //   7        - hasLevels flag
+  //   6..5     - stride selector (0 -> 1 byte, otherwise 1|2|3)
+  //   4..0     - child count (5 bits), 31 == overflow -> extra byte
+  const bool hasLevels = (header >> 7) != 0;
+  uint8_t stride = static_cast<uint8_t>((header >> 5) & 0x03u);
+  if (stride == 0) {
+    stride = 1;
+  }
+  size_t childCount = static_cast<size_t>(header & 0x1Fu);
+  if (childCount == 31u) {
+    if (pos >= remaining) {
+      return AutomatonState{};
+    }
+    childCount = base[pos++];
+  }
+
+  const uint8_t* levelsPtr = nullptr;
+  size_t levelsLen = 0;
+  if (hasLevels) {
+    if (pos + 1 >= remaining) {
+      return AutomatonState{};
+    }
+    const uint8_t offsetHi = base[pos++];
+    const uint8_t offsetLoLen = base[pos++];
+    // The 12-bit offset (hi<<4 | top nibble) points into the blob-level levels list.
+    // The bottom nibble stores how many packed entries belong to this node.
+    const size_t offset = (static_cast<size_t>(offsetHi) << 4) | (offsetLoLen >> 4);
+    levelsLen = offsetLoLen & 0x0Fu;
+    if (offset + levelsLen > automaton.size) {
+      return AutomatonState{};
+    }
+    levelsPtr = automaton.data + offset;
+  }
+
+  if (pos + childCount > remaining) {
+    return AutomatonState{};
+  }
+  const uint8_t* transitions = base + pos;
+  pos += childCount;
+
+  const size_t targetsBytes = childCount * stride;
+  if (pos + targetsBytes > remaining) {
+    return AutomatonState{};
+  }
+  const uint8_t* targets = base + pos;
+
+  state.data = automaton.data;
+  state.size = automaton.size;
+  state.addr = addr;
+  state.stride = stride;
+  state.childCount = childCount;
+  state.transitions = transitions;
+  state.targets = targets;
+  state.levels = levelsPtr;
+  state.levelsLen = levelsLen;
+  return state;
+}
+
+// Convert the packed stride-sized delta back into a signed offset.
+int32_t decodeDelta(const uint8_t* buf, uint8_t stride) {
+  if (stride == 1) {
+    return static_cast<int8_t>(buf[0]);
+  }
+  if (stride == 2) {
+    return static_cast<int16_t>((static_cast<uint16_t>(buf[0]) << 8) | static_cast<uint16_t>(buf[1]));
+  }
+  const int32_t unsignedVal =
+      (static_cast<int32_t>(buf[0]) << 16) | (static_cast<int32_t>(buf[1]) << 8) | static_cast<int32_t>(buf[2]);
+  return unsignedVal - (1 << 23);
+}
+
+// Follow a single byte transition from `state`, decoding the child node on success.
+bool transition(const EmbeddedAutomaton& automaton, const AutomatonState& state, uint8_t letter, AutomatonState& out) {
+  if (!state.valid()) {
+    return false;
+  }
+
+  // Children remain sorted by letter in the serialized blob, but the lists are
+  // short enough that a linear scan keeps code size down compared to binary search.
+  for (size_t idx = 0; idx < state.childCount; ++idx) {
+    if (state.transitions[idx] != letter) {
+      continue;
+    }
+    const uint8_t* deltaPtr = state.targets + idx * state.stride;
+    const int32_t delta = decodeDelta(deltaPtr, state.stride);
+    // Deltas are relative to the current node's address, allowing us to keep all
+    // targets within 24 bits while still referencing further nodes in the blob.
+    const int64_t nextAddr = static_cast<int64_t>(state.addr) + delta;
+    if (nextAddr < 0 || static_cast<size_t>(nextAddr) >= automaton.size) {
+      return false;
+    }
+    out = decodeState(automaton, static_cast<size_t>(nextAddr));
+    return out.valid();
+  }
+  return false;
+}
+
+// Converts odd score positions back into codepoint indexes, honoring min prefix/suffix constraints.
+// Each break corresponds to scores[breakIndex + 1] because of the leading '.' sentinel.
+// Convert odd score entries into hyphen positions while honoring prefix/suffix limits.
+std::vector<size_t> collectBreakIndexes(const std::vector<CodepointInfo>& cps, const std::vector<uint8_t>& scores,
+                                        const size_t minPrefix, const size_t minSuffix) {
+  std::vector<size_t> indexes;
+  const size_t cpCount = cps.size();
+  if (cpCount < 2) {
+    return indexes;
+  }
+
+  for (size_t breakIndex = 1; breakIndex < cpCount; ++breakIndex) {
+    if (breakIndex < minPrefix) {
+      continue;
+    }
+
+    const size_t suffixCount = cpCount - breakIndex;
+    if (suffixCount < minSuffix) {
+      continue;
+    }
+
+    const size_t scoreIdx = breakIndex + 1;
+    if (scoreIdx >= scores.size()) {
+      break;
+    }
+    if ((scores[scoreIdx] & 1u) == 0) {
+      continue;
+    }
+    indexes.push_back(breakIndex);
+  }
+
+  return indexes;
+}
+
+}  // namespace
+
+// Entry point that runs the full Liang pipeline for a single word.
+std::vector<size_t> liangBreakIndexes(const std::vector<CodepointInfo>& cps,
+                                      const SerializedHyphenationPatterns& patterns, const LiangWordConfig& config) {
+  const auto augmented = buildAugmentedWord(cps, config);
+  if (augmented.empty()) {
+    return {};
+  }
+
+  const EmbeddedAutomaton& automaton = getAutomaton(patterns);
+  if (!automaton.valid()) {
+    return {};
+  }
+
+  const AutomatonState root = decodeState(automaton, automaton.rootOffset);
+  if (!root.valid()) {
+    return {};
+  }
+
+  // Liang scores: one entry per augmented char (leading/trailing dots included).
+  std::vector<uint8_t> scores(augmented.charCount(), 0);
+
+  // Walk every starting character position and stream bytes through the trie.
+  for (size_t charStart = 0; charStart < augmented.charByteOffsets.size(); ++charStart) {
+    const size_t byteStart = augmented.charByteOffsets[charStart];
+    AutomatonState state = root;
+
+    for (size_t cursor = byteStart; cursor < augmented.bytes.size(); ++cursor) {
+      AutomatonState next;
+      if (!transition(automaton, state, augmented.bytes[cursor], next)) {
+        break;  // No more matches for this prefix.
+      }
+      state = next;
+
+      if (state.levels && state.levelsLen > 0) {
+        size_t offset = 0;
+        // Each packed byte stores the byte-distance delta and the Liang level digit.
+        for (size_t i = 0; i < state.levelsLen; ++i) {
+          const uint8_t packed = state.levels[i];
+          const size_t dist = static_cast<size_t>(packed / 10);
+          const uint8_t level = static_cast<uint8_t>(packed % 10);
+
+          offset += dist;
+          const size_t splitByte = byteStart + offset;
+          if (splitByte >= augmented.byteToCharIndex.size()) {
+            continue;
+          }
+
+          const int32_t boundary = augmented.byteToCharIndex[splitByte];
+          if (boundary < 0) {
+            continue;  // Mid-codepoint byte, wait for the next one.
+          }
+          if (boundary < 2 || boundary + 2 > static_cast<int32_t>(augmented.charCount())) {
+            continue;  // Skip splits that land in the leading/trailing sentinels.
+          }
+
+          const size_t idx = static_cast<size_t>(boundary);
+          if (idx >= scores.size()) {
+            continue;
+          }
+          scores[idx] = std::max(scores[idx], level);
+        }
+      }
+    }
+  }
+
+  return collectBreakIndexes(cps, scores, config.minPrefix, config.minSuffix);
+}

lib/Epub/Epub/hyphenation/LiangHyphenation.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "HyphenationCommon.h"
+#include "SerializedHyphenationTrie.h"
+
+// Encapsulates every language-specific dial the Liang algorithm needs at runtime.  The helpers are
+// intentionally represented as bare function pointers because we invoke them inside tight loops and
+// want to avoid the overhead of std::function or functors.  The minima default to the TeX-recommended
+// "2/2" split but individual languages (English, for example) can override them.
+struct LiangWordConfig {
+  static constexpr size_t kDefaultMinPrefix = 2;
+  static constexpr size_t kDefaultMinSuffix = 2;
+  // Predicate used to reject non-alphabetic characters before pattern lookup.  Returning false causes
+  // the entire word to be skipped, matching the behavior of classic TeX hyphenation tables.
+  bool (*isLetter)(uint32_t);
+  // Language-specific case folding that matches how the TeX patterns were authored (usually lower-case
+  // ASCII for Latin and lowercase Cyrillic for Russian).  Patterns are stored in UTF-8, so this must
+  // operate on Unicode scalars rather than bytes.
+  uint32_t (*toLower)(uint32_t);
+  // Minimum codepoints required on the left/right of any break.  These correspond to TeX's
+  // lefthyphenmin and righthyphenmin knobs.
+  size_t minPrefix;
+  size_t minSuffix;
+
+  // Lightweight aggregate constructor so call sites can declare `const LiangWordConfig config(...)`
+  // without verbose member assignment boilerplate.
+  LiangWordConfig(bool (*letterFn)(uint32_t), uint32_t (*lowerFn)(uint32_t), size_t prefix = kDefaultMinPrefix,
+                  size_t suffix = kDefaultMinSuffix)
+      : isLetter(letterFn), toLower(lowerFn), minPrefix(prefix), minSuffix(suffix) {}
+};
+
+// Shared Liang pattern evaluator used by every language-specific hyphenator.
+std::vector<size_t> liangBreakIndexes(const std::vector<CodepointInfo>& cps,
+                                      const SerializedHyphenationPatterns& patterns, const LiangWordConfig& config);

lib/Epub/Epub/hyphenation/SerializedHyphenationTrie.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+
+// Lightweight descriptor that points at a serialized Liang hyphenation trie stored in flash.
+struct SerializedHyphenationPatterns {
+  const std::uint8_t* data;
+  size_t size;
+};

lib/Epub/Epub/hyphenation/generated/hyph-fr.trie.h

@@ -0,0 +1,383 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+
+#include "../SerializedHyphenationTrie.h"
+
+// Auto-generated by generate_hyphenation_trie.py. Do not edit manually.
+alignas(4) constexpr uint8_t fr_trie_data[] = {
+    0x00, 0x00, 0x1A, 0xF4, 0x02, 0x0C, 0x18, 0x22, 0x16, 0x21, 0x0B, 0x16, 0x21, 0x0E, 0x01, 0x0C, 0x0B, 0x3D, 0x0C,
+    0x2B, 0x0E, 0x0C, 0x0C, 0x33, 0x0C, 0x33, 0x16, 0x34, 0x2A, 0x0D, 0x20, 0x0D, 0x0C, 0x0D, 0x2A, 0x17, 0x04, 0x1F,
+    0x0C, 0x29, 0x0C, 0x20, 0x0B, 0x0C, 0x17, 0x17, 0x0C, 0x3F, 0x35, 0x53, 0x4A, 0x36, 0x34, 0x21, 0x2A, 0x0D, 0x0C,
+    0x2A, 0x0D, 0x16, 0x02, 0x17, 0x15, 0x15, 0x0C, 0x15, 0x16, 0x2C, 0x47, 0x0C, 0x49, 0x2B, 0x0C, 0x0D, 0x34, 0x0D,
+    0x2A, 0x0B, 0x16, 0x2B, 0x0C, 0x17, 0x2A, 0x0B, 0x0C, 0x03, 0x0C, 0x16, 0x0D, 0x01, 0x16, 0x0C, 0x0B, 0x0C, 0x3E,
+    0x48, 0x2C, 0x0B, 0x29, 0x16, 0x37, 0x40, 0x1F, 0x16, 0x20, 0x17, 0x36, 0x0D, 0x52, 0x3D, 0x16, 0x1F, 0x0C, 0x16,
+    0x3E, 0x0D, 0x49, 0x0C, 0x03, 0x16, 0x35, 0x0C, 0x22, 0x0F, 0x02, 0x0D, 0x51, 0x0C, 0x21, 0x0C, 0x20, 0x0B, 0x16,
+    0x21, 0x0C, 0x17, 0x21, 0x0C, 0x0D, 0xA0, 0x00, 0x91, 0x21, 0x61, 0xFD, 0x21, 0xA9, 0xFD, 0x21, 0xC3, 0xFD, 0x21,
+    0x72, 0xFD, 0xA0, 0x00, 0xC2, 0x21, 0x68, 0xFD, 0x21, 0x63, 0xFD, 0x21, 0x73, 0xFD, 0xA0, 0x00, 0x51, 0x21, 0x6C,
+    0xFD, 0x21, 0x6F, 0xFD, 0x21, 0x6F, 0xFD, 0x21, 0x63, 0xFD, 0xA0, 0x01, 0x12, 0x21, 0x63, 0xFD, 0x21, 0x61, 0xFD,
+    0x21, 0x6F, 0xFD, 0x21, 0x6E, 0xFD, 0x21, 0x69, 0xFD, 0xA0, 0x01, 0x32, 0x21, 0x72, 0xFD, 0x21, 0x74, 0xFD, 0x21,
+    0x73, 0xFD, 0xA0, 0x01, 0x52, 0x21, 0x69, 0xFD, 0x21, 0x73, 0xFD, 0x21, 0xA9, 0xFD, 0x21, 0xC3, 0xFD, 0x21, 0x68,
+    0xFD, 0x21, 0x74, 0xFD, 0x21, 0x73, 0xFD, 0xA0, 0x01, 0x72, 0xA0, 0x01, 0xB1, 0x21, 0x65, 0xFD, 0x21, 0x6E, 0xFD,
+    0xA1, 0x01, 0x72, 0x6E, 0xFD, 0xA0, 0x01, 0x92, 0x21, 0xA9, 0xFD, 0x24, 0x61, 0x65, 0xC3, 0x73, 0xE9, 0xF5, 0xFD,
+    0xE9, 0x21, 0x69, 0xF7, 0x23, 0x61, 0x65, 0x74, 0xC2, 0xDA, 0xFD, 0xA0, 0x01, 0xC2, 0x21, 0x61, 0xFD, 0x21, 0x74,
+    0xFD, 0x21, 0x73, 0xFD, 0x21, 0x6F, 0xFD, 0xA0, 0x01, 0xE1, 0x21, 0x61, 0xFD, 0x21, 0x74, 0xFD, 0x41, 0x2E, 0xFF,
+    0x5E, 0x21, 0x74, 0xFC, 0x21, 0x6E, 0xFD, 0x21, 0x65, 0xFD, 0x22, 0x67, 0x70, 0xFD, 0xFD, 0xA0, 0x05, 0x72, 0x21,
+    0x74, 0xFD, 0x21, 0x61, 0xFD, 0x21, 0x6E, 0xFD, 0xC9, 0x00, 0x61, 0x62, 0x65, 0x6C, 0x6D, 0x6E, 0x70, 0x73, 0x72,
+    0x67, 0xFF, 0x4C, 0xFF, 0x58, 0xFF, 0x67, 0xFF, 0x79, 0xFF, 0xC3, 0xFF, 0xD6, 0xFF, 0xDF, 0xFF, 0xEF, 0xFF, 0xFD,
+    0xA0, 0x00, 0x71, 0x27, 0xA2, 0xAA, 0xA9, 0xA8, 0xAE, 0xB4, 0xBB, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xA0,
+    0x02, 0x52, 0x22, 0x61, 0x6F, 0xFD, 0xFD, 0xA0, 0x02, 0x93, 0x21, 0x61, 0xFD, 0x21, 0x72, 0xFD, 0xA2, 0x00, 0x61,
+    0x6E, 0x75, 0xF2, 0xFD, 0x21, 0xA9, 0xAC, 0x42, 0xC3, 0x69, 0xFF, 0xFD, 0xFF, 0xA9, 0x21, 0x6E, 0xF9, 0x41, 0x74,
+    0xFF, 0x06, 0x21, 0x61, 0xFC, 0x21, 0x6D, 0xFD, 0x21, 0x72, 0xFD, 0x21, 0x6F, 0xFD, 0xA0, 0x01, 0xE2, 0x21, 0x74,
+    0xFD, 0x21, 0x69, 0xFD, 0x41, 0x72, 0xFF, 0x6B, 0x21, 0x75, 0xFC, 0x21, 0x67, 0xFD, 0xA2, 0x02, 0x52, 0x6E, 0x75,
+    0xF3, 0xFD, 0x41, 0x62, 0xFF, 0x5A, 0x21, 0x61, 0xFC, 0x21, 0x66, 0xFD, 0x41, 0x74, 0xFF, 0x50, 0x41, 0x72, 0xFF,
+    0x4F, 0x21, 0x6F, 0xFC, 0xC4, 0x02, 0x52, 0x66, 0x70, 0x72, 0x78, 0xFF, 0xF2, 0xFF, 0xF5, 0xFF, 0x45, 0xFF, 0xFD,
+    0xA0, 0x06, 0x82, 0x21, 0x61, 0xFD, 0x21, 0x74, 0xFD, 0x21, 0x63, 0xFD, 0x21, 0x75, 0xFD, 0x21, 0x72, 0xF4, 0x21,
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+    0xFD, 0x22, 0x2E, 0x73, 0xFA, 0xFD, 0x21, 0x74, 0xFB, 0x21, 0x61, 0xFD, 0x4A, 0x75, 0x61, 0xC3, 0x65, 0x69, 0x6F,
+    0xC5, 0x73, 0x78, 0x79, 0xFF, 0xEA, 0xF0, 0x0B, 0xF1, 0x4E, 0xF1, 0x73, 0xF0, 0x0B, 0xF0, 0x0B, 0xF4, 0x0D, 0xFF,
+    0xFD, 0xF8, 0x58, 0xF0, 0x0B, 0x41, 0x68, 0xF8, 0x39, 0x21, 0x74, 0xFC, 0x42, 0x73, 0x6C, 0xFF, 0xFD, 0xF8, 0x38,
+    0x41, 0x6F, 0xFD, 0x5C, 0x21, 0x74, 0xFC, 0x22, 0x61, 0x73, 0xF2, 0xFD, 0x42, 0xA9, 0xA8, 0xEF, 0xD2, 0xEF, 0xD2,
+    0x47, 0x61, 0x65, 0xC3, 0x69, 0x6F, 0x75, 0x79, 0xEF, 0xCB, 0xF1, 0x33, 0xFF, 0xF9, 0xEF, 0xCB, 0xEF, 0xCB, 0xEF,
+    0xCB, 0xEF, 0xCB, 0x5D, 0x27, 0x2E, 0x61, 0x62, 0xC3, 0x63, 0x6A, 0x6D, 0x72, 0x70, 0x69, 0x65, 0x64, 0x74, 0x66,
+    0x67, 0x73, 0x6F, 0x77, 0x68, 0x75, 0x76, 0x6C, 0x78, 0x6B, 0x71, 0x6E, 0x79, 0x7A, 0xE7, 0xD0, 0xEF, 0x48, 0xF0,
+    0xCD, 0xF1, 0x53, 0xF2, 0x28, 0xF3, 0xD1, 0xF3, 0xFD, 0xF4, 0xAD, 0xF5, 0x6F, 0xF7, 0x2F, 0xF8, 0x34, 0xF8, 0x98,
+    0xF9, 0x32, 0xFA, 0x80, 0xFA, 0xE4, 0xFB, 0x3C, 0xFC, 0xA4, 0xFD, 0x6C, 0xFD, 0x97, 0xFE, 0x19, 0xFE, 0x4A, 0xFE,
+    0xDD, 0xFF, 0x35, 0xFF, 0x58, 0xFF, 0x65, 0xFF, 0x88, 0xFF, 0xAA, 0xFF, 0xDE, 0xFF, 0xEA,
+};
+
+constexpr SerializedHyphenationPatterns fr_patterns = {
+    fr_trie_data,
+    sizeof(fr_trie_data),
+};

lib/Epub/Epub/parsers/ChapterHtmlSlimParser.cpp

@@ -88,7 +88,7 @@ void ChapterHtmlSlimParser::startNewTextBlock(const TextBlock::Style style, cons
 
     makePages();
   }
-  currentTextBlock.reset(new ParsedText(style, extraParagraphSpacing, blockStyle));
+  currentTextBlock.reset(new ParsedText(style, extraParagraphSpacing, hyphenationEnabled, blockStyle));
 }
 
 void ChapterHtmlSlimParser::startNewTextBlock(const TextBlock::Style style) { startNewTextBlock(style, BlockStyle{}); }
@@ -356,21 +356,6 @@ void XMLCALL ChapterHtmlSlimParser::characterData(void* userData, const XML_Char
       continue;
     }
 
-    // Skip soft-hyphen with UTF-8 representation (U+00AD) = 0xC2 0xAD
-    const XML_Char SHY_BYTE_1 = static_cast<XML_Char>(0xC2);
-    const XML_Char SHY_BYTE_2 = static_cast<XML_Char>(0xAD);
-    // 1. Check for the start of the 2-byte Soft Hyphen sequence
-    if (s[i] == SHY_BYTE_1) {
-      // 2. Check if the next byte exists AND if it completes the sequence
-      //    We must check i + 1 < len to prevent reading past the end of the buffer.
-      if ((i + 1 < len) && (s[i + 1] == SHY_BYTE_2)) {
-        // Sequence 0xC2 0xAD found!
-        // Skip the current byte (0xC2) and the next byte (0xAD)
-        i++;       // Increment 'i' one more time to skip the 0xAD byte
-        continue;  // Skip the rest of the loop and move to the next iteration
-      }
-    }
-
     // Skip Zero Width No-Break Space / BOM (U+FEFF) = 0xEF 0xBB 0xBF
     const XML_Char FEFF_BYTE_1 = static_cast<XML_Char>(0xEF);
     const XML_Char FEFF_BYTE_2 = static_cast<XML_Char>(0xBB);

lib/Epub/Epub/parsers/ChapterHtmlSlimParser.h

@@ -39,6 +39,7 @@ class ChapterHtmlSlimParser {
   uint8_t paragraphAlignment;
   uint16_t viewportWidth;
   uint16_t viewportHeight;
+  bool hyphenationEnabled;
   const CssParser* cssParser;
 
   // Style tracking (replaces depth-based approach)
@@ -67,7 +68,7 @@ class ChapterHtmlSlimParser {
   explicit ChapterHtmlSlimParser(const std::string& filepath, GfxRenderer& renderer, const int fontId,
                                  const float lineCompression, const bool extraParagraphSpacing,
                                  const uint8_t paragraphAlignment, const uint16_t viewportWidth,
-                                 const uint16_t viewportHeight,
+                                 const uint16_t viewportHeight, const bool hyphenationEnabled,
                                  const std::function<void(std::unique_ptr<Page>)>& completePageFn,
                                  const std::function<void(int)>& progressFn = nullptr,
                                  const CssParser* cssParser = nullptr)
@@ -79,6 +80,7 @@ class ChapterHtmlSlimParser {
         paragraphAlignment(paragraphAlignment),
         viewportWidth(viewportWidth),
         viewportHeight(viewportHeight),
+        hyphenationEnabled(hyphenationEnabled),
         completePageFn(completePageFn),
         progressFn(progressFn),
         cssParser(cssParser) {}

lib/Epub/Epub/parsers/ContentOpfParser.cpp

@@ -108,6 +108,11 @@ void XMLCALL ContentOpfParser::startElement(void* userData, const XML_Char* name
     return;
   }
 
+  if (self->state == IN_METADATA && strcmp(name, "dc:language") == 0) {
+    self->state = IN_BOOK_LANGUAGE;
+    return;
+  }
+
   if (self->state == IN_PACKAGE && (strcmp(name, "manifest") == 0 || strcmp(name, "opf:manifest") == 0)) {
     self->state = IN_MANIFEST;
     if (!SdMan.openFileForWrite("COF", self->cachePath + itemCacheFile, self->tempItemStore)) {
@@ -272,6 +277,11 @@ void XMLCALL ContentOpfParser::characterData(void* userData, const XML_Char* s,
     self->author.append(s, len);
     return;
   }
+
+  if (self->state == IN_BOOK_LANGUAGE) {
+    self->language.append(s, len);
+    return;
+  }
 }
 
 void XMLCALL ContentOpfParser::endElement(void* userData, const XML_Char* name) {
@@ -306,6 +316,11 @@ void XMLCALL ContentOpfParser::endElement(void* userData, const XML_Char* name)
     return;
   }
 
+  if (self->state == IN_BOOK_LANGUAGE && strcmp(name, "dc:language") == 0) {
+    self->state = IN_METADATA;
+    return;
+  }
+
   if (self->state == IN_METADATA && (strcmp(name, "metadata") == 0 || strcmp(name, "opf:metadata") == 0)) {
     self->state = IN_PACKAGE;
     return;

lib/Epub/Epub/parsers/ContentOpfParser.h

@@ -15,6 +15,7 @@ class ContentOpfParser final : public Print {
     IN_METADATA,
     IN_BOOK_TITLE,
     IN_BOOK_AUTHOR,
+    IN_BOOK_LANGUAGE,
     IN_MANIFEST,
     IN_SPINE,
     IN_GUIDE,
@@ -36,6 +37,7 @@ class ContentOpfParser final : public Print {
  public:
   std::string title;
   std::string author;
+  std::string language;
   std::string tocNcxPath;
   std::string tocNavPath;  // EPUB 3 nav document path
   std::string coverItemHref;

lib/GfxRenderer/GfxRenderer.cpp

@@ -596,7 +596,7 @@ void GfxRenderer::drawTextRotated90CW(const int fontId, const int x, const int y
   while ((cp = utf8NextCodepoint(reinterpret_cast<const uint8_t**>(&text)))) {
     const EpdGlyph* glyph = font.getGlyph(cp, style);
     if (!glyph) {
-      glyph = font.getGlyph('?', style);
+      glyph = font.getGlyph(REPLACEMENT_GLYPH, style);
     }
     if (!glyph) {
       continue;
@@ -774,8 +774,7 @@ void GfxRenderer::renderChar(const EpdFontFamily& fontFamily, const uint32_t cp,
                              const bool pixelState, const EpdFontFamily::Style style) const {
   const EpdGlyph* glyph = fontFamily.getGlyph(cp, style);
   if (!glyph) {
-    // TODO: Replace with fallback glyph property?
-    glyph = fontFamily.getGlyph('?', style);
+    glyph = fontFamily.getGlyph(REPLACEMENT_GLYPH, style);
   }
 
   // no glyph?

lib/KOReaderSync/KOReaderCredentialStore.cpp

@@ -0,0 +1,168 @@
+#include "KOReaderCredentialStore.h"
+
+#include <HardwareSerial.h>
+#include <MD5Builder.h>
+#include <SDCardManager.h>
+#include <Serialization.h>
+
+// Initialize the static instance
+KOReaderCredentialStore KOReaderCredentialStore::instance;
+
+namespace {
+// File format version
+constexpr uint8_t KOREADER_FILE_VERSION = 1;
+
+// KOReader credentials file path
+constexpr char KOREADER_FILE[] = "/.crosspoint/koreader.bin";
+
+// Default sync server URL
+constexpr char DEFAULT_SERVER_URL[] = "https://sync.koreader.rocks:443";
+
+// Obfuscation key - "KOReader" in ASCII
+// This is NOT cryptographic security, just prevents casual file reading
+constexpr uint8_t OBFUSCATION_KEY[] = {0x4B, 0x4F, 0x52, 0x65, 0x61, 0x64, 0x65, 0x72};
+constexpr size_t KEY_LENGTH = sizeof(OBFUSCATION_KEY);
+}  // namespace
+
+void KOReaderCredentialStore::obfuscate(std::string& data) const {
+  for (size_t i = 0; i < data.size(); i++) {
+    data[i] ^= OBFUSCATION_KEY[i % KEY_LENGTH];
+  }
+}
+
+bool KOReaderCredentialStore::saveToFile() const {
+  // Make sure the directory exists
+  SdMan.mkdir("/.crosspoint");
+
+  FsFile file;
+  if (!SdMan.openFileForWrite("KRS", KOREADER_FILE, file)) {
+    return false;
+  }
+
+  // Write header
+  serialization::writePod(file, KOREADER_FILE_VERSION);
+
+  // Write username (plaintext - not particularly sensitive)
+  serialization::writeString(file, username);
+  Serial.printf("[%lu] [KRS] Saving username: %s\n", millis(), username.c_str());
+
+  // Write password (obfuscated)
+  std::string obfuscatedPwd = password;
+  obfuscate(obfuscatedPwd);
+  serialization::writeString(file, obfuscatedPwd);
+
+  // Write server URL
+  serialization::writeString(file, serverUrl);
+
+  // Write match method
+  serialization::writePod(file, static_cast<uint8_t>(matchMethod));
+
+  file.close();
+  Serial.printf("[%lu] [KRS] Saved KOReader credentials to file\n", millis());
+  return true;
+}
+
+bool KOReaderCredentialStore::loadFromFile() {
+  FsFile file;
+  if (!SdMan.openFileForRead("KRS", KOREADER_FILE, file)) {
+    Serial.printf("[%lu] [KRS] No credentials file found\n", millis());
+    return false;
+  }
+
+  // Read and verify version
+  uint8_t version;
+  serialization::readPod(file, version);
+  if (version != KOREADER_FILE_VERSION) {
+    Serial.printf("[%lu] [KRS] Unknown file version: %u\n", millis(), version);
+    file.close();
+    return false;
+  }
+
+  // Read username
+  if (file.available()) {
+    serialization::readString(file, username);
+  } else {
+    username.clear();
+  }
+
+  // Read and deobfuscate password
+  if (file.available()) {
+    serialization::readString(file, password);
+    obfuscate(password);  // XOR is symmetric, so same function deobfuscates
+  } else {
+    password.clear();
+  }
+
+  // Read server URL
+  if (file.available()) {
+    serialization::readString(file, serverUrl);
+  } else {
+    serverUrl.clear();
+  }
+
+  // Read match method
+  if (file.available()) {
+    uint8_t method;
+    serialization::readPod(file, method);
+    matchMethod = static_cast<DocumentMatchMethod>(method);
+  } else {
+    matchMethod = DocumentMatchMethod::FILENAME;
+  }
+
+  file.close();
+  Serial.printf("[%lu] [KRS] Loaded KOReader credentials for user: %s\n", millis(), username.c_str());
+  return true;
+}
+
+void KOReaderCredentialStore::setCredentials(const std::string& user, const std::string& pass) {
+  username = user;
+  password = pass;
+  Serial.printf("[%lu] [KRS] Set credentials for user: %s\n", millis(), user.c_str());
+}
+
+std::string KOReaderCredentialStore::getMd5Password() const {
+  if (password.empty()) {
+    return "";
+  }
+
+  // Calculate MD5 hash of password using ESP32's MD5Builder
+  MD5Builder md5;
+  md5.begin();
+  md5.add(password.c_str());
+  md5.calculate();
+
+  return md5.toString().c_str();
+}
+
+bool KOReaderCredentialStore::hasCredentials() const { return !username.empty() && !password.empty(); }
+
+void KOReaderCredentialStore::clearCredentials() {
+  username.clear();
+  password.clear();
+  saveToFile();
+  Serial.printf("[%lu] [KRS] Cleared KOReader credentials\n", millis());
+}
+
+void KOReaderCredentialStore::setServerUrl(const std::string& url) {
+  serverUrl = url;
+  Serial.printf("[%lu] [KRS] Set server URL: %s\n", millis(), url.empty() ? "(default)" : url.c_str());
+}
+
+std::string KOReaderCredentialStore::getBaseUrl() const {
+  if (serverUrl.empty()) {
+    return DEFAULT_SERVER_URL;
+  }
+
+  // Normalize URL: add http:// if no protocol specified (local servers typically don't have SSL)
+  if (serverUrl.find("://") == std::string::npos) {
+    return "http://" + serverUrl;
+  }
+
+  return serverUrl;
+}
+
+void KOReaderCredentialStore::setMatchMethod(DocumentMatchMethod method) {
+  matchMethod = method;
+  Serial.printf("[%lu] [KRS] Set match method: %s\n", millis(),
+                method == DocumentMatchMethod::FILENAME ? "Filename" : "Binary");
+}

lib/KOReaderSync/KOReaderCredentialStore.h

@@ -0,0 +1,69 @@
+#pragma once
+#include <cstdint>
+#include <string>
+
+// Document matching method for KOReader sync
+enum class DocumentMatchMethod : uint8_t {
+  FILENAME = 0,  // Match by filename (simpler, works across different file sources)
+  BINARY = 1,    // Match by partial MD5 of file content (more accurate, but files must be identical)
+};
+
+/**
+ * Singleton class for storing KOReader sync credentials on the SD card.
+ * Credentials are stored in /sd/.crosspoint/koreader.bin with basic
+ * XOR obfuscation to prevent casual reading (not cryptographically secure).
+ */
+class KOReaderCredentialStore {
+ private:
+  static KOReaderCredentialStore instance;
+  std::string username;
+  std::string password;
+  std::string serverUrl;                                            // Custom sync server URL (empty = default)
+  DocumentMatchMethod matchMethod = DocumentMatchMethod::FILENAME;  // Default to filename for compatibility
+
+  // Private constructor for singleton
+  KOReaderCredentialStore() = default;
+
+  // XOR obfuscation (symmetric - same for encode/decode)
+  void obfuscate(std::string& data) const;
+
+ public:
+  // Delete copy constructor and assignment
+  KOReaderCredentialStore(const KOReaderCredentialStore&) = delete;
+  KOReaderCredentialStore& operator=(const KOReaderCredentialStore&) = delete;
+
+  // Get singleton instance
+  static KOReaderCredentialStore& getInstance() { return instance; }
+
+  // Save/load from SD card
+  bool saveToFile() const;
+  bool loadFromFile();
+
+  // Credential management
+  void setCredentials(const std::string& user, const std::string& pass);
+  const std::string& getUsername() const { return username; }
+  const std::string& getPassword() const { return password; }
+
+  // Get MD5 hash of password for API authentication
+  std::string getMd5Password() const;
+
+  // Check if credentials are set
+  bool hasCredentials() const;
+
+  // Clear credentials
+  void clearCredentials();
+
+  // Server URL management
+  void setServerUrl(const std::string& url);
+  const std::string& getServerUrl() const { return serverUrl; }
+
+  // Get base URL for API calls (with http:// normalization if no protocol, falls back to default)
+  std::string getBaseUrl() const;
+
+  // Document matching method
+  void setMatchMethod(DocumentMatchMethod method);
+  DocumentMatchMethod getMatchMethod() const { return matchMethod; }
+};
+
+// Helper macro to access credential store
+#define KOREADER_STORE KOReaderCredentialStore::getInstance()

lib/KOReaderSync/KOReaderDocumentId.cpp

@@ -0,0 +1,96 @@
+#include "KOReaderDocumentId.h"
+
+#include <HardwareSerial.h>
+#include <MD5Builder.h>
+#include <SDCardManager.h>
+
+namespace {
+// Extract filename from path (everything after last '/')
+std::string getFilename(const std::string& path) {
+  const size_t pos = path.rfind('/');
+  if (pos == std::string::npos) {
+    return path;
+  }
+  return path.substr(pos + 1);
+}
+}  // namespace
+
+std::string KOReaderDocumentId::calculateFromFilename(const std::string& filePath) {
+  const std::string filename = getFilename(filePath);
+  if (filename.empty()) {
+    return "";
+  }
+
+  MD5Builder md5;
+  md5.begin();
+  md5.add(filename.c_str());
+  md5.calculate();
+
+  std::string result = md5.toString().c_str();
+  Serial.printf("[%lu] [KODoc] Filename hash: %s (from '%s')\n", millis(), result.c_str(), filename.c_str());
+  return result;
+}
+
+size_t KOReaderDocumentId::getOffset(int i) {
+  // Offset = 1024 << (2*i)
+  // For i = -1: 1024 >> 2 = 256
+  // For i >= 0: 1024 << (2*i)
+  if (i < 0) {
+    return CHUNK_SIZE >> (-2 * i);
+  }
+  return CHUNK_SIZE << (2 * i);
+}
+
+std::string KOReaderDocumentId::calculate(const std::string& filePath) {
+  FsFile file;
+  if (!SdMan.openFileForRead("KODoc", filePath, file)) {
+    Serial.printf("[%lu] [KODoc] Failed to open file: %s\n", millis(), filePath.c_str());
+    return "";
+  }
+
+  const size_t fileSize = file.fileSize();
+  Serial.printf("[%lu] [KODoc] Calculating hash for file: %s (size: %zu)\n", millis(), filePath.c_str(), fileSize);
+
+  // Initialize MD5 builder
+  MD5Builder md5;
+  md5.begin();
+
+  // Buffer for reading chunks
+  uint8_t buffer[CHUNK_SIZE];
+  size_t totalBytesRead = 0;
+
+  // Read from each offset (i = -1 to 10)
+  for (int i = -1; i < OFFSET_COUNT - 1; i++) {
+    const size_t offset = getOffset(i);
+
+    // Skip if offset is beyond file size
+    if (offset >= fileSize) {
+      continue;
+    }
+
+    // Seek to offset
+    if (!file.seekSet(offset)) {
+      Serial.printf("[%lu] [KODoc] Failed to seek to offset %zu\n", millis(), offset);
+      continue;
+    }
+
+    // Read up to CHUNK_SIZE bytes
+    const size_t bytesToRead = std::min(CHUNK_SIZE, fileSize - offset);
+    const size_t bytesRead = file.read(buffer, bytesToRead);
+
+    if (bytesRead > 0) {
+      md5.add(buffer, bytesRead);
+      totalBytesRead += bytesRead;
+    }
+  }
+
+  file.close();
+
+  // Calculate final hash
+  md5.calculate();
+  std::string result = md5.toString().c_str();
+
+  Serial.printf("[%lu] [KODoc] Hash calculated: %s (from %zu bytes)\n", millis(), result.c_str(), totalBytesRead);
+
+  return result;
+}

lib/KOReaderSync/KOReaderDocumentId.h

@@ -0,0 +1,45 @@
+#pragma once
+#include <string>
+
+/**
+ * Calculate KOReader document ID (partial MD5 hash).
+ *
+ * KOReader identifies documents using a partial MD5 hash of the file content.
+ * The algorithm reads 1024 bytes at specific offsets and computes the MD5 hash
+ * of the concatenated data.
+ *
+ * Offsets are calculated as: 1024 << (2*i) for i = -1 to 10
+ * Producing: 256, 1024, 4096, 16384, 65536, 262144, 1048576, 4194304,
+ *            16777216, 67108864, 268435456, 1073741824 bytes
+ *
+ * If an offset is beyond the file size, it is skipped.
+ */
+class KOReaderDocumentId {
+ public:
+  /**
+   * Calculate the KOReader document hash for a file (binary/content-based).
+   *
+   * @param filePath Path to the file (typically an EPUB)
+   * @return 32-character lowercase hex string, or empty string on failure
+   */
+  static std::string calculate(const std::string& filePath);
+
+  /**
+   * Calculate document hash from filename only (filename-based sync mode).
+   * This is simpler and works when files have the same name across devices.
+   *
+   * @param filePath Path to the file (only the filename portion is used)
+   * @return 32-character lowercase hex MD5 of the filename
+   */
+  static std::string calculateFromFilename(const std::string& filePath);
+
+ private:
+  // Size of each chunk to read at each offset
+  static constexpr size_t CHUNK_SIZE = 1024;
+
+  // Number of offsets to try (i = -1 to 10, so 12 offsets)
+  static constexpr int OFFSET_COUNT = 12;
+
+  // Calculate offset for index i: 1024 << (2*i)
+  static size_t getOffset(int i);
+};

lib/KOReaderSync/KOReaderSyncClient.cpp

@@ -0,0 +1,198 @@
+#include "KOReaderSyncClient.h"
+
+#include <ArduinoJson.h>
+#include <HTTPClient.h>
+#include <HardwareSerial.h>
+#include <WiFi.h>
+#include <WiFiClientSecure.h>
+
+#include <ctime>
+
+#include "KOReaderCredentialStore.h"
+
+namespace {
+// Device identifier for CrossPoint reader
+constexpr char DEVICE_NAME[] = "CrossPoint";
+constexpr char DEVICE_ID[] = "crosspoint-reader";
+
+void addAuthHeaders(HTTPClient& http) {
+  http.addHeader("Accept", "application/vnd.koreader.v1+json");
+  http.addHeader("x-auth-user", KOREADER_STORE.getUsername().c_str());
+  http.addHeader("x-auth-key", KOREADER_STORE.getMd5Password().c_str());
+}
+
+bool isHttpsUrl(const std::string& url) { return url.rfind("https://", 0) == 0; }
+}  // namespace
+
+KOReaderSyncClient::Error KOReaderSyncClient::authenticate() {
+  if (!KOREADER_STORE.hasCredentials()) {
+    Serial.printf("[%lu] [KOSync] No credentials configured\n", millis());
+    return NO_CREDENTIALS;
+  }
+
+  std::string url = KOREADER_STORE.getBaseUrl() + "/users/auth";
+  Serial.printf("[%lu] [KOSync] Authenticating: %s\n", millis(), url.c_str());
+
+  HTTPClient http;
+  std::unique_ptr<WiFiClientSecure> secureClient;
+  WiFiClient plainClient;
+
+  if (isHttpsUrl(url)) {
+    secureClient.reset(new WiFiClientSecure);
+    secureClient->setInsecure();
+    http.begin(*secureClient, url.c_str());
+  } else {
+    http.begin(plainClient, url.c_str());
+  }
+  addAuthHeaders(http);
+
+  const int httpCode = http.GET();
+  http.end();
+
+  Serial.printf("[%lu] [KOSync] Auth response: %d\n", millis(), httpCode);
+
+  if (httpCode == 200) {
+    return OK;
+  } else if (httpCode == 401) {
+    return AUTH_FAILED;
+  } else if (httpCode < 0) {
+    return NETWORK_ERROR;
+  }
+  return SERVER_ERROR;
+}
+
+KOReaderSyncClient::Error KOReaderSyncClient::getProgress(const std::string& documentHash,
+                                                          KOReaderProgress& outProgress) {
+  if (!KOREADER_STORE.hasCredentials()) {
+    Serial.printf("[%lu] [KOSync] No credentials configured\n", millis());
+    return NO_CREDENTIALS;
+  }
+
+  std::string url = KOREADER_STORE.getBaseUrl() + "/syncs/progress/" + documentHash;
+  Serial.printf("[%lu] [KOSync] Getting progress: %s\n", millis(), url.c_str());
+
+  HTTPClient http;
+  std::unique_ptr<WiFiClientSecure> secureClient;
+  WiFiClient plainClient;
+
+  if (isHttpsUrl(url)) {
+    secureClient.reset(new WiFiClientSecure);
+    secureClient->setInsecure();
+    http.begin(*secureClient, url.c_str());
+  } else {
+    http.begin(plainClient, url.c_str());
+  }
+  addAuthHeaders(http);
+
+  const int httpCode = http.GET();
+
+  if (httpCode == 200) {
+    // Parse JSON response from response string
+    String responseBody = http.getString();
+    http.end();
+
+    JsonDocument doc;
+    const DeserializationError error = deserializeJson(doc, responseBody);
+
+    if (error) {
+      Serial.printf("[%lu] [KOSync] JSON parse failed: %s\n", millis(), error.c_str());
+      return JSON_ERROR;
+    }
+
+    outProgress.document = documentHash;
+    outProgress.progress = doc["progress"].as<std::string>();
+    outProgress.percentage = doc["percentage"].as<float>();
+    outProgress.device = doc["device"].as<std::string>();
+    outProgress.deviceId = doc["device_id"].as<std::string>();
+    outProgress.timestamp = doc["timestamp"].as<int64_t>();
+
+    Serial.printf("[%lu] [KOSync] Got progress: %.2f%% at %s\n", millis(), outProgress.percentage * 100,
+                  outProgress.progress.c_str());
+    return OK;
+  }
+
+  http.end();
+
+  Serial.printf("[%lu] [KOSync] Get progress response: %d\n", millis(), httpCode);
+
+  if (httpCode == 401) {
+    return AUTH_FAILED;
+  } else if (httpCode == 404) {
+    return NOT_FOUND;
+  } else if (httpCode < 0) {
+    return NETWORK_ERROR;
+  }
+  return SERVER_ERROR;
+}
+
+KOReaderSyncClient::Error KOReaderSyncClient::updateProgress(const KOReaderProgress& progress) {
+  if (!KOREADER_STORE.hasCredentials()) {
+    Serial.printf("[%lu] [KOSync] No credentials configured\n", millis());
+    return NO_CREDENTIALS;
+  }
+
+  std::string url = KOREADER_STORE.getBaseUrl() + "/syncs/progress";
+  Serial.printf("[%lu] [KOSync] Updating progress: %s\n", millis(), url.c_str());
+
+  HTTPClient http;
+  std::unique_ptr<WiFiClientSecure> secureClient;
+  WiFiClient plainClient;
+
+  if (isHttpsUrl(url)) {
+    secureClient.reset(new WiFiClientSecure);
+    secureClient->setInsecure();
+    http.begin(*secureClient, url.c_str());
+  } else {
+    http.begin(plainClient, url.c_str());
+  }
+  addAuthHeaders(http);
+  http.addHeader("Content-Type", "application/json");
+
+  // Build JSON body (timestamp not required per API spec)
+  JsonDocument doc;
+  doc["document"] = progress.document;
+  doc["progress"] = progress.progress;
+  doc["percentage"] = progress.percentage;
+  doc["device"] = DEVICE_NAME;
+  doc["device_id"] = DEVICE_ID;
+
+  std::string body;
+  serializeJson(doc, body);
+
+  Serial.printf("[%lu] [KOSync] Request body: %s\n", millis(), body.c_str());
+
+  const int httpCode = http.PUT(body.c_str());
+  http.end();
+
+  Serial.printf("[%lu] [KOSync] Update progress response: %d\n", millis(), httpCode);
+
+  if (httpCode == 200 || httpCode == 202) {
+    return OK;
+  } else if (httpCode == 401) {
+    return AUTH_FAILED;
+  } else if (httpCode < 0) {
+    return NETWORK_ERROR;
+  }
+  return SERVER_ERROR;
+}
+
+const char* KOReaderSyncClient::errorString(Error error) {
+  switch (error) {
+    case OK:
+      return "Success";
+    case NO_CREDENTIALS:
+      return "No credentials configured";
+    case NETWORK_ERROR:
+      return "Network error";
+    case AUTH_FAILED:
+      return "Authentication failed";
+    case SERVER_ERROR:
+      return "Server error (try again later)";
+    case JSON_ERROR:
+      return "JSON parse error";
+    case NOT_FOUND:
+      return "No progress found";
+    default:
+      return "Unknown error";
+  }
+}

lib/KOReaderSync/KOReaderSyncClient.h

@@ -0,0 +1,59 @@
+#pragma once
+#include <string>
+
+/**
+ * Progress data from KOReader sync server.
+ */
+struct KOReaderProgress {
+  std::string document;  // Document hash
+  std::string progress;  // XPath-like progress string
+  float percentage;      // Progress percentage (0.0 to 1.0)
+  std::string device;    // Device name
+  std::string deviceId;  // Device ID
+  int64_t timestamp;     // Unix timestamp of last update
+};
+
+/**
+ * HTTP client for KOReader sync API.
+ *
+ * Base URL: https://sync.koreader.rocks:443/
+ *
+ * API Endpoints:
+ *   GET /users/auth - Authenticate (validate credentials)
+ *   GET /syncs/progress/:document - Get progress for a document
+ *   PUT /syncs/progress - Update progress for a document
+ *
+ * Authentication:
+ *   x-auth-user: username
+ *   x-auth-key: MD5 hash of password
+ */
+class KOReaderSyncClient {
+ public:
+  enum Error { OK = 0, NO_CREDENTIALS, NETWORK_ERROR, AUTH_FAILED, SERVER_ERROR, JSON_ERROR, NOT_FOUND };
+
+  /**
+   * Authenticate with the sync server (validate credentials).
+   * @return OK on success, error code on failure
+   */
+  static Error authenticate();
+
+  /**
+   * Get reading progress for a document.
+   * @param documentHash The document hash (from KOReaderDocumentId)
+   * @param outProgress Output: the progress data
+   * @return OK on success, NOT_FOUND if no progress exists, error code on failure
+   */
+  static Error getProgress(const std::string& documentHash, KOReaderProgress& outProgress);
+
+  /**
+   * Update reading progress for a document.
+   * @param progress The progress data to upload
+   * @return OK on success, error code on failure
+   */
+  static Error updateProgress(const KOReaderProgress& progress);
+
+  /**
+   * Get human-readable error message.
+   */
+  static const char* errorString(Error error);
+};

lib/KOReaderSync/ProgressMapper.cpp

@@ -0,0 +1,112 @@
+#include "ProgressMapper.h"
+
+#include <HardwareSerial.h>
+
+#include <cmath>
+
+KOReaderPosition ProgressMapper::toKOReader(const std::shared_ptr<Epub>& epub, const CrossPointPosition& pos) {
+  KOReaderPosition result;
+
+  // Calculate page progress within current spine item
+  float intraSpineProgress = 0.0f;
+  if (pos.totalPages > 0) {
+    intraSpineProgress = static_cast<float>(pos.pageNumber) / static_cast<float>(pos.totalPages);
+  }
+
+  // Calculate overall book progress (0.0-1.0)
+  result.percentage = epub->calculateProgress(pos.spineIndex, intraSpineProgress);
+
+  // Generate XPath with estimated paragraph position based on page
+  result.xpath = generateXPath(pos.spineIndex, pos.pageNumber, pos.totalPages);
+
+  // Get chapter info for logging
+  const int tocIndex = epub->getTocIndexForSpineIndex(pos.spineIndex);
+  const std::string chapterName = (tocIndex >= 0) ? epub->getTocItem(tocIndex).title : "unknown";
+
+  Serial.printf("[%lu] [ProgressMapper] CrossPoint -> KOReader: chapter='%s', page=%d/%d -> %.2f%% at %s\n", millis(),
+                chapterName.c_str(), pos.pageNumber, pos.totalPages, result.percentage * 100, result.xpath.c_str());
+
+  return result;
+}
+
+CrossPointPosition ProgressMapper::toCrossPoint(const std::shared_ptr<Epub>& epub, const KOReaderPosition& koPos,
+                                                int totalPagesInSpine) {
+  CrossPointPosition result;
+  result.spineIndex = 0;
+  result.pageNumber = 0;
+  result.totalPages = totalPagesInSpine;
+
+  const size_t bookSize = epub->getBookSize();
+  if (bookSize == 0) {
+    return result;
+  }
+
+  // First, try to get spine index from XPath (DocFragment)
+  int xpathSpineIndex = parseDocFragmentIndex(koPos.xpath);
+  if (xpathSpineIndex >= 0 && xpathSpineIndex < epub->getSpineItemsCount()) {
+    result.spineIndex = xpathSpineIndex;
+    // When we have XPath, go to page 0 of the spine - byte-based page calculation is unreliable
+    result.pageNumber = 0;
+  } else {
+    // Fall back to percentage-based lookup for both spine and page
+    const size_t targetBytes = static_cast<size_t>(bookSize * koPos.percentage);
+
+    // Find the spine item that contains this byte position
+    for (int i = 0; i < epub->getSpineItemsCount(); i++) {
+      const size_t cumulativeSize = epub->getCumulativeSpineItemSize(i);
+      if (cumulativeSize >= targetBytes) {
+        result.spineIndex = i;
+        break;
+      }
+    }
+
+    // Estimate page number within the spine item using percentage (only when no XPath)
+    if (totalPagesInSpine > 0 && result.spineIndex < epub->getSpineItemsCount()) {
+      const size_t prevCumSize = (result.spineIndex > 0) ? epub->getCumulativeSpineItemSize(result.spineIndex - 1) : 0;
+      const size_t currentCumSize = epub->getCumulativeSpineItemSize(result.spineIndex);
+      const size_t spineSize = currentCumSize - prevCumSize;
+
+      if (spineSize > 0) {
+        const size_t bytesIntoSpine = (targetBytes > prevCumSize) ? (targetBytes - prevCumSize) : 0;
+        const float intraSpineProgress = static_cast<float>(bytesIntoSpine) / static_cast<float>(spineSize);
+        const float clampedProgress = std::max(0.0f, std::min(1.0f, intraSpineProgress));
+        result.pageNumber = static_cast<int>(clampedProgress * totalPagesInSpine);
+        result.pageNumber = std::max(0, std::min(result.pageNumber, totalPagesInSpine - 1));
+      }
+    }
+  }
+
+  Serial.printf("[%lu] [ProgressMapper] KOReader -> CrossPoint: %.2f%% at %s -> spine=%d, page=%d\n", millis(),
+                koPos.percentage * 100, koPos.xpath.c_str(), result.spineIndex, result.pageNumber);
+
+  return result;
+}
+
+std::string ProgressMapper::generateXPath(int spineIndex, int pageNumber, int totalPages) {
+  // KOReader uses 1-based DocFragment indices
+  // Use a simple xpath pointing to the DocFragment - KOReader will use the percentage for fine positioning
+  // Avoid specifying paragraph numbers as they may not exist in the target document
+  return "/body/DocFragment[" + std::to_string(spineIndex + 1) + "]/body";
+}
+
+int ProgressMapper::parseDocFragmentIndex(const std::string& xpath) {
+  // Look for DocFragment[N] pattern
+  const size_t start = xpath.find("DocFragment[");
+  if (start == std::string::npos) {
+    return -1;
+  }
+
+  const size_t numStart = start + 12;  // Length of "DocFragment["
+  const size_t numEnd = xpath.find(']', numStart);
+  if (numEnd == std::string::npos) {
+    return -1;
+  }
+
+  try {
+    const int docFragmentIndex = std::stoi(xpath.substr(numStart, numEnd - numStart));
+    // KOReader uses 1-based indices, we use 0-based
+    return docFragmentIndex - 1;
+  } catch (...) {
+    return -1;
+  }
+}

lib/KOReaderSync/ProgressMapper.h

@@ -0,0 +1,72 @@
+#pragma once
+#include <Epub.h>
+
+#include <memory>
+#include <string>
+
+/**
+ * CrossPoint position representation.
+ */
+struct CrossPointPosition {
+  int spineIndex;  // Current spine item (chapter) index
+  int pageNumber;  // Current page within the spine item
+  int totalPages;  // Total pages in the current spine item
+};
+
+/**
+ * KOReader position representation.
+ */
+struct KOReaderPosition {
+  std::string xpath;  // XPath-like progress string
+  float percentage;   // Progress percentage (0.0 to 1.0)
+};
+
+/**
+ * Maps between CrossPoint and KOReader position formats.
+ *
+ * CrossPoint tracks position as (spineIndex, pageNumber).
+ * KOReader uses XPath-like strings + percentage.
+ *
+ * Since CrossPoint discards HTML structure during parsing, we generate
+ * synthetic XPath strings based on spine index, using percentage as the
+ * primary sync mechanism.
+ */
+class ProgressMapper {
+ public:
+  /**
+   * Convert CrossPoint position to KOReader format.
+   *
+   * @param epub The EPUB book
+   * @param pos CrossPoint position
+   * @return KOReader position
+   */
+  static KOReaderPosition toKOReader(const std::shared_ptr<Epub>& epub, const CrossPointPosition& pos);
+
+  /**
+   * Convert KOReader position to CrossPoint format.
+   *
+   * Note: The returned pageNumber may be approximate since different
+   * rendering settings produce different page counts.
+   *
+   * @param epub The EPUB book
+   * @param koPos KOReader position
+   * @param totalPagesInSpine Total pages in the target spine item (for page estimation)
+   * @return CrossPoint position
+   */
+  static CrossPointPosition toCrossPoint(const std::shared_ptr<Epub>& epub, const KOReaderPosition& koPos,
+                                         int totalPagesInSpine = 0);
+
+ private:
+  /**
+   * Generate XPath for KOReader compatibility.
+   * Format: /body/DocFragment[spineIndex+1]/body/p[estimatedParagraph]
+   * Paragraph is estimated based on page position within the chapter.
+   */
+  static std::string generateXPath(int spineIndex, int pageNumber, int totalPages);
+
+  /**
+   * Parse DocFragment index from XPath string.
+   * Returns -1 if not found.
+   */
+  static int parseDocFragmentIndex(const std::string& xpath);
+};

lib/Utf8/Utf8.h

@@ -2,4 +2,6 @@
 
 #include <cstdint>
 
+#define REPLACEMENT_GLYPH 0xFFFD
+
 uint32_t utf8NextCodepoint(const unsigned char** string);

lib/Xtc/Xtc.cpp

@@ -203,7 +203,7 @@ bool Xtc::generateCoverBmp() const {
   coverBmp.write(reinterpret_cast<const uint8_t*>(&colorsImportant), 4);
 
   // Color palette (2 colors for 1-bit)
-  // XTC uses inverted polarity: 0 = black, 1 = white
+  // XTC 1-bit polarity: 0 = black, 1 = white (standard BMP palette order)
   // Color 0: Black (text/foreground in XTC)
   uint8_t black[4] = {0x00, 0x00, 0x00, 0x00};
   coverBmp.write(black, 4);
@@ -506,8 +506,8 @@ bool Xtc::generateThumbBmp() const {
             // Bounds check for buffer access
             if (byteIdx < bitmapSize) {
               const uint8_t pixelBit = (pageBuffer[byteIdx] >> bitIdx) & 1;
-              // XTC polarity: 1=black, 0=white
-              grayValue = pixelBit ? 0 : 255;
+              // XTC 1-bit polarity: 0=black, 1=white (same as BMP palette)
+              grayValue = pixelBit ? 255 : 0;
             }
           }
 

scripts/generate_hyphenation_trie.py

@@ -0,0 +1,82 @@
+#!/usr/bin/env python3
+"""Embed hypher-generated `.bin` tries into constexpr headers."""
+
+from __future__ import annotations
+
+import argparse
+import pathlib
+
+
+def _format_bytes(blob: bytes, per_line: int = 16) -> str:
+    # Render the blob as a comma separated list of hex literals with consistent wrapping.
+    lines = []
+    for i in range(0, len(blob), per_line):
+        chunk = ', '.join(f"0x{b:02X}" for b in blob[i : i + per_line])
+        lines.append(f"    {chunk},")
+    if not lines:
+        lines.append("    0x00,")
+    return '\n'.join(lines)
+
+
+def _symbol_from_output(path: pathlib.Path) -> str:
+    # Derive a stable C identifier from the destination header name (e.g., hyph-en.trie.h -> en).
+    name = path.name
+    if name.endswith('.trie.h'):
+        name = name[:-7]
+    if name.startswith('hyph-'):
+        name = name[5:]
+    name = name.replace('-', '_')
+    if name.endswith('.trie'):
+        name = name[:-5]
+    return name
+
+
+def write_header(path: pathlib.Path, blob: bytes, symbol: str) -> None:
+    # Emit a constexpr header containing the raw bytes plus a SerializedHyphenationPatterns descriptor.
+    path.parent.mkdir(parents=True, exist_ok=True)
+    data_symbol = f"{symbol}_trie_data"
+    patterns_symbol = f"{symbol}_patterns"
+    bytes_literal = _format_bytes(blob)
+    content = f"""#pragma once
+
+#include <cstddef>
+#include <cstdint>
+
+#include "../SerializedHyphenationTrie.h"
+
+// Auto-generated by generate_hyphenation_trie.py. Do not edit manually.
+alignas(4) constexpr uint8_t {data_symbol}[] = {{
+{bytes_literal}
+}};
+
+constexpr SerializedHyphenationPatterns {patterns_symbol} = {{
+    {data_symbol},
+    sizeof({data_symbol}),
+}};
+"""
+    path.write_text(content)
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--input', dest='inputs', action='append', required=True,
+                        help='Path to a hypher-generated .bin trie')
+    parser.add_argument('--output', dest='outputs', action='append', required=True,
+                        help='Destination header path (hyph-*.trie.h)')
+    args = parser.parse_args()
+
+    if len(args.inputs) != len(args.outputs):
+        raise SystemExit('input/output counts must match')
+
+    for src, dst in zip(args.inputs, args.outputs):
+        # Process each input/output pair independently so mixed-language refreshes work in one invocation.
+        src_path = pathlib.Path(src)
+        blob = src_path.read_bytes()
+        out_path = pathlib.Path(dst)
+        symbol = _symbol_from_output(out_path)
+        write_header(out_path, blob, symbol)
+        print(f'wrote {dst} ({len(blob)} bytes payload)')
+
+
+if __name__ == '__main__':
+    main()

src/CrossPointSettings.cpp

@@ -14,7 +14,7 @@ CrossPointSettings CrossPointSettings::instance;
 namespace {
 constexpr uint8_t SETTINGS_FILE_VERSION = 1;
 // Increment this when adding new persisted settings fields
-constexpr uint8_t SETTINGS_COUNT = 18;
+constexpr uint8_t SETTINGS_COUNT = 20;
 constexpr char SETTINGS_FILE[] = "/.crosspoint/settings.bin";
 }  // namespace
 
@@ -48,6 +48,7 @@ bool CrossPointSettings::saveToFile() const {
   serialization::writePod(outputFile, textAntiAliasing);
   serialization::writePod(outputFile, hideBatteryPercentage);
   serialization::writePod(outputFile, longPressChapterSkip);
+  serialization::writePod(outputFile, hyphenationEnabled);
   outputFile.close();
 
   Serial.printf("[%lu] [CPS] Settings saved to file\n", millis());
@@ -110,12 +111,15 @@ bool CrossPointSettings::loadFromFile() {
       strncpy(opdsServerUrl, urlStr.c_str(), sizeof(opdsServerUrl) - 1);
       opdsServerUrl[sizeof(opdsServerUrl) - 1] = '\0';
     }
+    if (++settingsRead >= fileSettingsCount) break;
     serialization::readPod(inputFile, textAntiAliasing);
     if (++settingsRead >= fileSettingsCount) break;
     serialization::readPod(inputFile, hideBatteryPercentage);
     if (++settingsRead >= fileSettingsCount) break;
     serialization::readPod(inputFile, longPressChapterSkip);
     if (++settingsRead >= fileSettingsCount) break;
+    serialization::readPod(inputFile, hyphenationEnabled);
+    if (++settingsRead >= fileSettingsCount) break;
   } while (false);
 
   inputFile.close();

src/CrossPointSettings.h

@@ -84,6 +84,8 @@ class CrossPointSettings {
   uint8_t sleepTimeout = SLEEP_10_MIN;
   // E-ink refresh frequency (default 15 pages)
   uint8_t refreshFrequency = REFRESH_15;
+  uint8_t hyphenationEnabled = 0;
+
   // Reader screen margin settings
   uint8_t screenMargin = 5;
   // OPDS browser settings

src/activities/home/HomeActivity.cpp

@@ -325,6 +325,10 @@ void HomeActivity::render() {
   }
 
   if (hasContinueReading) {
+    // Invert text colors based on selection state:
+    // - With cover: selected = white text on black box, unselected = black text on white box
+    // - Without cover: selected = white text on black card, unselected = black text on white card
+
     // Split into words (avoid stringstream to keep this light on the MCU)
     std::vector<std::string> words;
     words.reserve(8);
@@ -407,7 +411,7 @@ void HomeActivity::render() {
     // Vertically center the title block within the card
     int titleYStart = bookY + (bookHeight - totalTextHeight) / 2;
 
-    // If cover image was rendered, draw white box behind title and author
+    // If cover image was rendered, draw box behind title and author
     if (coverRendered) {
       constexpr int boxPadding = 8;
       // Calculate the max text width for the box
@@ -438,14 +442,14 @@ void HomeActivity::render() {
       const int boxX = (pageWidth - boxWidth) / 2;
       const int boxY = titleYStart - boxPadding;
 
-      // Draw white filled box
-      renderer.fillRect(boxX, boxY, boxWidth, boxHeight, false);
-      // Draw black border around the box
-      renderer.drawRect(boxX, boxY, boxWidth, boxHeight, true);
+      // Draw box (inverted when selected: black box instead of white)
+      renderer.fillRect(boxX, boxY, boxWidth, boxHeight, bookSelected);
+      // Draw border around the box (inverted when selected: white border instead of black)
+      renderer.drawRect(boxX, boxY, boxWidth, boxHeight, !bookSelected);
     }
 
     for (const auto& line : lines) {
-      renderer.drawCenteredText(UI_12_FONT_ID, titleYStart, line.c_str(), !bookSelected || coverRendered);
+      renderer.drawCenteredText(UI_12_FONT_ID, titleYStart, line.c_str(), !bookSelected);
       titleYStart += renderer.getLineHeight(UI_12_FONT_ID);
     }
 
@@ -466,13 +470,13 @@ void HomeActivity::render() {
         }
         trimmedAuthor.append("...");
       }
-      renderer.drawCenteredText(UI_10_FONT_ID, titleYStart, trimmedAuthor.c_str(), !bookSelected || coverRendered);
+      renderer.drawCenteredText(UI_10_FONT_ID, titleYStart, trimmedAuthor.c_str(), !bookSelected);
     }
 
     // "Continue Reading" label at the bottom
     const int continueY = bookY + bookHeight - renderer.getLineHeight(UI_10_FONT_ID) * 3 / 2;
     if (coverRendered) {
-      // Draw white box behind "Continue Reading" text
+      // Draw box behind "Continue Reading" text (inverted when selected: black box instead of white)
       const char* continueText = "Continue Reading";
       const int continueTextWidth = renderer.getTextWidth(UI_10_FONT_ID, continueText);
       constexpr int continuePadding = 6;
@@ -480,9 +484,9 @@ void HomeActivity::render() {
       const int continueBoxHeight = renderer.getLineHeight(UI_10_FONT_ID) + continuePadding;
       const int continueBoxX = (pageWidth - continueBoxWidth) / 2;
       const int continueBoxY = continueY - continuePadding / 2;
-      renderer.fillRect(continueBoxX, continueBoxY, continueBoxWidth, continueBoxHeight, false);
-      renderer.drawRect(continueBoxX, continueBoxY, continueBoxWidth, continueBoxHeight, true);
-      renderer.drawCenteredText(UI_10_FONT_ID, continueY, continueText, true);
+      renderer.fillRect(continueBoxX, continueBoxY, continueBoxWidth, continueBoxHeight, bookSelected);
+      renderer.drawRect(continueBoxX, continueBoxY, continueBoxWidth, continueBoxHeight, !bookSelected);
+      renderer.drawCenteredText(UI_10_FONT_ID, continueY, continueText, !bookSelected);
     } else {
       renderer.drawCenteredText(UI_10_FONT_ID, continueY, "Continue Reading", !bookSelected);
     }

src/activities/reader/EpubReaderActivity.cpp

@@ -118,9 +118,11 @@ void EpubReaderActivity::loop() {
   if (mappedInput.wasReleased(MappedInputManager::Button::Confirm)) {
     // Don't start activity transition while rendering
     xSemaphoreTake(renderingMutex, portMAX_DELAY);
+    const int currentPage = section ? section->currentPage : 0;
+    const int totalPages = section ? section->pageCount : 0;
     exitActivity();
     enterNewActivity(new EpubReaderChapterSelectionActivity(
-        this->renderer, this->mappedInput, epub, currentSpineIndex,
+        this->renderer, this->mappedInput, epub, epub->getPath(), currentSpineIndex, currentPage, totalPages,
         [this] {
           exitActivity();
           updateRequired = true;
@@ -133,6 +135,16 @@ void EpubReaderActivity::loop() {
           }
           exitActivity();
           updateRequired = true;
+        },
+        [this](const int newSpineIndex, const int newPage) {
+          // Handle sync position
+          if (currentSpineIndex != newSpineIndex || (section && section->currentPage != newPage)) {
+            currentSpineIndex = newSpineIndex;
+            nextPageNumber = newPage;
+            section.reset();
+          }
+          exitActivity();
+          updateRequired = true;
         }));
     xSemaphoreGive(renderingMutex);
   }
@@ -268,7 +280,7 @@ void EpubReaderActivity::renderScreen() {
 
     if (!section->loadSectionFile(SETTINGS.getReaderFontId(), SETTINGS.getReaderLineCompression(),
                                   SETTINGS.extraParagraphSpacing, SETTINGS.paragraphAlignment, viewportWidth,
-                                  viewportHeight)) {
+                                  viewportHeight, SETTINGS.hyphenationEnabled)) {
       Serial.printf("[%lu] [ERS] Cache not found, building...\n", millis());
 
       // Progress bar dimensions
@@ -313,7 +325,7 @@ void EpubReaderActivity::renderScreen() {
 
       if (!section->createSectionFile(SETTINGS.getReaderFontId(), SETTINGS.getReaderLineCompression(),
                                       SETTINGS.extraParagraphSpacing, SETTINGS.paragraphAlignment, viewportWidth,
-                                      viewportHeight, progressSetup, progressCallback)) {
+                                      viewportHeight, SETTINGS.hyphenationEnabled, progressSetup, progressCallback)) {
         Serial.printf("[%lu] [ERS] Failed to persist page data to SD\n", millis());
         section.reset();
         return;
@@ -430,11 +442,13 @@ void EpubReaderActivity::renderStatusBar(const int orientedMarginRight, const in
   if (showProgress) {
     // Calculate progress in book
     const float sectionChapterProg = static_cast<float>(section->currentPage) / section->pageCount;
-    const uint8_t bookProgress = epub->calculateProgress(currentSpineIndex, sectionChapterProg);
+    const float bookProgress = epub->calculateProgress(currentSpineIndex, sectionChapterProg) * 100;
 
     // Right aligned text for progress counter
-    const std::string progress = std::to_string(section->currentPage + 1) + "/" + std::to_string(section->pageCount) +
-                                 "  " + std::to_string(bookProgress) + "%";
+    char progressStr[32];
+    snprintf(progressStr, sizeof(progressStr), "%d/%d  %.1f%%", section->currentPage + 1, section->pageCount,
+             bookProgress);
+    const std::string progress = progressStr;
     progressTextWidth = renderer.getTextWidth(SMALL_FONT_ID, progress.c_str());
     renderer.drawText(SMALL_FONT_ID, renderer.getScreenWidth() - orientedMarginRight - progressTextWidth, textY,
                       progress.c_str());

src/activities/reader/EpubReaderChapterSelectionActivity.cpp

@@ -2,6 +2,8 @@
 
 #include <GfxRenderer.h>
 
+#include "KOReaderCredentialStore.h"
+#include "KOReaderSyncActivity.h"
 #include "MappedInputManager.h"
 #include "fontIds.h"
 
@@ -10,6 +12,26 @@ namespace {
 constexpr int SKIP_PAGE_MS = 700;
 }  // namespace
 
+bool EpubReaderChapterSelectionActivity::hasSyncOption() const { return KOREADER_STORE.hasCredentials(); }
+
+int EpubReaderChapterSelectionActivity::getTotalItems() const {
+  // Add 2 for sync options (top and bottom) if credentials are configured
+  const int syncCount = hasSyncOption() ? 2 : 0;
+  return epub->getTocItemsCount() + syncCount;
+}
+
+bool EpubReaderChapterSelectionActivity::isSyncItem(int index) const {
+  if (!hasSyncOption()) return false;
+  // First item and last item are sync options
+  return index == 0 || index == getTotalItems() - 1;
+}
+
+int EpubReaderChapterSelectionActivity::tocIndexFromItemIndex(int itemIndex) const {
+  // Account for the sync option at the top
+  const int offset = hasSyncOption() ? 1 : 0;
+  return itemIndex - offset;
+}
+
 int EpubReaderChapterSelectionActivity::getPageItems() const {
   // Layout constants used in renderScreen
   constexpr int startY = 60;
@@ -34,17 +56,21 @@ void EpubReaderChapterSelectionActivity::taskTrampoline(void* param) {
 }
 
 void EpubReaderChapterSelectionActivity::onEnter() {
-  Activity::onEnter();
+  ActivityWithSubactivity::onEnter();
 
   if (!epub) {
     return;
   }
 
   renderingMutex = xSemaphoreCreateMutex();
+
+  // Account for sync option offset when finding current TOC index
+  const int syncOffset = hasSyncOption() ? 1 : 0;
   selectorIndex = epub->getTocIndexForSpineIndex(currentSpineIndex);
   if (selectorIndex == -1) {
     selectorIndex = 0;
   }
+  selectorIndex += syncOffset;  // Offset for top sync option
 
   // Trigger first update
   updateRequired = true;
@@ -57,7 +83,7 @@ void EpubReaderChapterSelectionActivity::onEnter() {
 }
 
 void EpubReaderChapterSelectionActivity::onExit() {
-  Activity::onExit();
+  ActivityWithSubactivity::onExit();
 
   // Wait until not rendering to delete task to avoid killing mid-instruction to EPD
   xSemaphoreTake(renderingMutex, portMAX_DELAY);
@@ -69,7 +95,30 @@ void EpubReaderChapterSelectionActivity::onExit() {
   renderingMutex = nullptr;
 }
 
+void EpubReaderChapterSelectionActivity::launchSyncActivity() {
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  exitActivity();
+  enterNewActivity(new KOReaderSyncActivity(
+      renderer, mappedInput, epub, epubPath, currentSpineIndex, currentPage, totalPagesInSpine,
+      [this]() {
+        // On cancel
+        exitActivity();
+        updateRequired = true;
+      },
+      [this](int newSpineIndex, int newPage) {
+        // On sync complete
+        exitActivity();
+        onSyncPosition(newSpineIndex, newPage);
+      }));
+  xSemaphoreGive(renderingMutex);
+}
+
 void EpubReaderChapterSelectionActivity::loop() {
+  if (subActivity) {
+    subActivity->loop();
+    return;
+  }
+
   const bool prevReleased = mappedInput.wasReleased(MappedInputManager::Button::Up) ||
                             mappedInput.wasReleased(MappedInputManager::Button::Left);
   const bool nextReleased = mappedInput.wasReleased(MappedInputManager::Button::Down) ||
@@ -77,9 +126,18 @@ void EpubReaderChapterSelectionActivity::loop() {
 
   const bool skipPage = mappedInput.getHeldTime() > SKIP_PAGE_MS;
   const int pageItems = getPageItems();
+  const int totalItems = getTotalItems();
 
   if (mappedInput.wasReleased(MappedInputManager::Button::Confirm)) {
-    const auto newSpineIndex = epub->getSpineIndexForTocIndex(selectorIndex);
+    // Check if sync option is selected (first or last item)
+    if (isSyncItem(selectorIndex)) {
+      launchSyncActivity();
+      return;
+    }
+
+    // Get TOC index (account for top sync offset)
+    const int tocIndex = tocIndexFromItemIndex(selectorIndex);
+    const auto newSpineIndex = epub->getSpineIndexForTocIndex(tocIndex);
     if (newSpineIndex == -1) {
       onGoBack();
     } else {
@@ -89,17 +147,16 @@ void EpubReaderChapterSelectionActivity::loop() {
     onGoBack();
   } else if (prevReleased) {
     if (skipPage) {
-      selectorIndex =
-          ((selectorIndex / pageItems - 1) * pageItems + epub->getTocItemsCount()) % epub->getTocItemsCount();
+      selectorIndex = ((selectorIndex / pageItems - 1) * pageItems + totalItems) % totalItems;
     } else {
-      selectorIndex = (selectorIndex + epub->getTocItemsCount() - 1) % epub->getTocItemsCount();
+      selectorIndex = (selectorIndex + totalItems - 1) % totalItems;
     }
     updateRequired = true;
   } else if (nextReleased) {
     if (skipPage) {
-      selectorIndex = ((selectorIndex / pageItems + 1) * pageItems) % epub->getTocItemsCount();
+      selectorIndex = ((selectorIndex / pageItems + 1) * pageItems) % totalItems;
     } else {
-      selectorIndex = (selectorIndex + 1) % epub->getTocItemsCount();
+      selectorIndex = (selectorIndex + 1) % totalItems;
     }
     updateRequired = true;
   }
@@ -107,7 +164,7 @@ void EpubReaderChapterSelectionActivity::loop() {
 
 void EpubReaderChapterSelectionActivity::displayTaskLoop() {
   while (true) {
-    if (updateRequired) {
+    if (updateRequired && !subActivity) {
       updateRequired = false;
       xSemaphoreTake(renderingMutex, portMAX_DELAY);
       renderScreen();
@@ -122,6 +179,7 @@ void EpubReaderChapterSelectionActivity::renderScreen() {
 
   const auto pageWidth = renderer.getScreenWidth();
   const int pageItems = getPageItems();
+  const int totalItems = getTotalItems();
 
   const std::string title =
       renderer.truncatedText(UI_12_FONT_ID, epub->getTitle().c_str(), pageWidth - 40, EpdFontFamily::BOLD);
@@ -129,11 +187,24 @@ void EpubReaderChapterSelectionActivity::renderScreen() {
 
   const auto pageStartIndex = selectorIndex / pageItems * pageItems;
   renderer.fillRect(0, 60 + (selectorIndex % pageItems) * 30 - 2, pageWidth - 1, 30);
-  for (int tocIndex = pageStartIndex; tocIndex < epub->getTocItemsCount() && tocIndex < pageStartIndex + pageItems;
-       tocIndex++) {
-    auto item = epub->getTocItem(tocIndex);
-    renderer.drawText(UI_10_FONT_ID, 20 + (item.level - 1) * 15, 60 + (tocIndex % pageItems) * 30, item.title.c_str(),
-                      tocIndex != selectorIndex);
+
+  for (int itemIndex = pageStartIndex; itemIndex < totalItems && itemIndex < pageStartIndex + pageItems; itemIndex++) {
+    const int displayY = 60 + (itemIndex % pageItems) * 30;
+    const bool isSelected = (itemIndex == selectorIndex);
+
+    if (isSyncItem(itemIndex)) {
+      // Draw sync option (at top or bottom)
+      renderer.drawText(UI_10_FONT_ID, 20, displayY, ">> Sync Progress", !isSelected);
+    } else {
+      // Draw TOC item (account for top sync offset)
+      const int tocIndex = tocIndexFromItemIndex(itemIndex);
+      auto item = epub->getTocItem(tocIndex);
+      const int indentSize = 20 + (item.level - 1) * 15;
+      const std::string chapterName =
+          renderer.truncatedText(UI_10_FONT_ID, item.title.c_str(), pageWidth - 40 - indentSize);
+      renderer.drawText(UI_10_FONT_ID, indentSize, 60 + (tocIndex % pageItems) * 30, chapterName.c_str(),
+                        tocIndex != selectorIndex);
+    }
   }
 
   const auto labels = mappedInput.mapLabels("« Back", "Select", "Up", "Down");

src/activities/reader/EpubReaderChapterSelectionActivity.h

@@ -6,36 +6,59 @@
 
 #include <memory>
 
-#include "../Activity.h"
+#include "../ActivityWithSubactivity.h"
 
-class EpubReaderChapterSelectionActivity final : public Activity {
+class EpubReaderChapterSelectionActivity final : public ActivityWithSubactivity {
   std::shared_ptr<Epub> epub;
+  std::string epubPath;
   TaskHandle_t displayTaskHandle = nullptr;
   SemaphoreHandle_t renderingMutex = nullptr;
   int currentSpineIndex = 0;
+  int currentPage = 0;
+  int totalPagesInSpine = 0;
   int selectorIndex = 0;
   bool updateRequired = false;
   const std::function<void()> onGoBack;
   const std::function<void(int newSpineIndex)> onSelectSpineIndex;
+  const std::function<void(int newSpineIndex, int newPage)> onSyncPosition;
 
   // Number of items that fit on a page, derived from logical screen height.
   // This adapts automatically when switching between portrait and landscape.
   int getPageItems() const;
 
+  // Total items including sync options (top and bottom)
+  int getTotalItems() const;
+
+  // Check if sync option is available (credentials configured)
+  bool hasSyncOption() const;
+
+  // Check if given item index is a sync option (first or last)
+  bool isSyncItem(int index) const;
+
+  // Convert item index to TOC index (accounting for top sync option offset)
+  int tocIndexFromItemIndex(int itemIndex) const;
+
   static void taskTrampoline(void* param);
   [[noreturn]] void displayTaskLoop();
   void renderScreen();
+  void launchSyncActivity();
 
  public:
   explicit EpubReaderChapterSelectionActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
-                                              const std::shared_ptr<Epub>& epub, const int currentSpineIndex,
-                                              const std::function<void()>& onGoBack,
-                                              const std::function<void(int newSpineIndex)>& onSelectSpineIndex)
-      : Activity("EpubReaderChapterSelection", renderer, mappedInput),
+                                              const std::shared_ptr<Epub>& epub, const std::string& epubPath,
+                                              const int currentSpineIndex, const int currentPage,
+                                              const int totalPagesInSpine, const std::function<void()>& onGoBack,
+                                              const std::function<void(int newSpineIndex)>& onSelectSpineIndex,
+                                              const std::function<void(int newSpineIndex, int newPage)>& onSyncPosition)
+      : ActivityWithSubactivity("EpubReaderChapterSelection", renderer, mappedInput),
         epub(epub),
+        epubPath(epubPath),
         currentSpineIndex(currentSpineIndex),
+        currentPage(currentPage),
+        totalPagesInSpine(totalPagesInSpine),
         onGoBack(onGoBack),
-        onSelectSpineIndex(onSelectSpineIndex) {}
+        onSelectSpineIndex(onSelectSpineIndex),
+        onSyncPosition(onSyncPosition) {}
   void onEnter() override;
   void onExit() override;
   void loop() override;

src/activities/reader/KOReaderSyncActivity.cpp

@@ -0,0 +1,439 @@
+#include "KOReaderSyncActivity.h"
+
+#include <GfxRenderer.h>
+#include <WiFi.h>
+#include <esp_sntp.h>
+
+#include "KOReaderCredentialStore.h"
+#include "KOReaderDocumentId.h"
+#include "MappedInputManager.h"
+#include "activities/network/WifiSelectionActivity.h"
+#include "fontIds.h"
+
+namespace {
+void syncTimeWithNTP() {
+  // Stop SNTP if already running (can't reconfigure while running)
+  if (esp_sntp_enabled()) {
+    esp_sntp_stop();
+  }
+
+  // Configure SNTP
+  esp_sntp_setoperatingmode(ESP_SNTP_OPMODE_POLL);
+  esp_sntp_setservername(0, "pool.ntp.org");
+  esp_sntp_init();
+
+  // Wait for time to sync (with timeout)
+  int retry = 0;
+  const int maxRetries = 50;  // 5 seconds max
+  while (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED && retry < maxRetries) {
+    vTaskDelay(100 / portTICK_PERIOD_MS);
+    retry++;
+  }
+
+  if (retry < maxRetries) {
+    Serial.printf("[%lu] [KOSync] NTP time synced\n", millis());
+  } else {
+    Serial.printf("[%lu] [KOSync] NTP sync timeout, using fallback\n", millis());
+  }
+}
+}  // namespace
+
+void KOReaderSyncActivity::taskTrampoline(void* param) {
+  auto* self = static_cast<KOReaderSyncActivity*>(param);
+  self->displayTaskLoop();
+}
+
+void KOReaderSyncActivity::onWifiSelectionComplete(const bool success) {
+  exitActivity();
+
+  if (!success) {
+    Serial.printf("[%lu] [KOSync] WiFi connection failed, exiting\n", millis());
+    onCancel();
+    return;
+  }
+
+  Serial.printf("[%lu] [KOSync] WiFi connected, starting sync\n", millis());
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  state = SYNCING;
+  statusMessage = "Syncing time...";
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+
+  // Sync time with NTP before making API requests
+  syncTimeWithNTP();
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  statusMessage = "Calculating document hash...";
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+
+  performSync();
+}
+
+void KOReaderSyncActivity::performSync() {
+  // Calculate document hash based on user's preferred method
+  if (KOREADER_STORE.getMatchMethod() == DocumentMatchMethod::FILENAME) {
+    documentHash = KOReaderDocumentId::calculateFromFilename(epubPath);
+  } else {
+    documentHash = KOReaderDocumentId::calculate(epubPath);
+  }
+  if (documentHash.empty()) {
+    xSemaphoreTake(renderingMutex, portMAX_DELAY);
+    state = SYNC_FAILED;
+    statusMessage = "Failed to calculate document hash";
+    xSemaphoreGive(renderingMutex);
+    updateRequired = true;
+    return;
+  }
+
+  Serial.printf("[%lu] [KOSync] Document hash: %s\n", millis(), documentHash.c_str());
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  statusMessage = "Fetching remote progress...";
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+  vTaskDelay(10 / portTICK_PERIOD_MS);
+
+  // Fetch remote progress
+  const auto result = KOReaderSyncClient::getProgress(documentHash, remoteProgress);
+
+  if (result == KOReaderSyncClient::NOT_FOUND) {
+    // No remote progress - offer to upload
+    xSemaphoreTake(renderingMutex, portMAX_DELAY);
+    state = NO_REMOTE_PROGRESS;
+    hasRemoteProgress = false;
+    xSemaphoreGive(renderingMutex);
+    updateRequired = true;
+    return;
+  }
+
+  if (result != KOReaderSyncClient::OK) {
+    xSemaphoreTake(renderingMutex, portMAX_DELAY);
+    state = SYNC_FAILED;
+    statusMessage = KOReaderSyncClient::errorString(result);
+    xSemaphoreGive(renderingMutex);
+    updateRequired = true;
+    return;
+  }
+
+  // Convert remote progress to CrossPoint position
+  hasRemoteProgress = true;
+  KOReaderPosition koPos = {remoteProgress.progress, remoteProgress.percentage};
+  remotePosition = ProgressMapper::toCrossPoint(epub, koPos, totalPagesInSpine);
+
+  // Calculate local progress in KOReader format (for display)
+  CrossPointPosition localPos = {currentSpineIndex, currentPage, totalPagesInSpine};
+  localProgress = ProgressMapper::toKOReader(epub, localPos);
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  state = SHOWING_RESULT;
+  selectedOption = 0;  // Default to "Apply"
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+}
+
+void KOReaderSyncActivity::performUpload() {
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  state = UPLOADING;
+  statusMessage = "Uploading progress...";
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+  vTaskDelay(10 / portTICK_PERIOD_MS);
+
+  // Convert current position to KOReader format
+  CrossPointPosition localPos = {currentSpineIndex, currentPage, totalPagesInSpine};
+  KOReaderPosition koPos = ProgressMapper::toKOReader(epub, localPos);
+
+  KOReaderProgress progress;
+  progress.document = documentHash;
+  progress.progress = koPos.xpath;
+  progress.percentage = koPos.percentage;
+
+  const auto result = KOReaderSyncClient::updateProgress(progress);
+
+  if (result != KOReaderSyncClient::OK) {
+    xSemaphoreTake(renderingMutex, portMAX_DELAY);
+    state = SYNC_FAILED;
+    statusMessage = KOReaderSyncClient::errorString(result);
+    xSemaphoreGive(renderingMutex);
+    updateRequired = true;
+    return;
+  }
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  state = UPLOAD_COMPLETE;
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+}
+
+void KOReaderSyncActivity::onEnter() {
+  ActivityWithSubactivity::onEnter();
+
+  renderingMutex = xSemaphoreCreateMutex();
+
+  xTaskCreate(&KOReaderSyncActivity::taskTrampoline, "KOSyncTask",
+              4096,               // Stack size (larger for network operations)
+              this,               // Parameters
+              1,                  // Priority
+              &displayTaskHandle  // Task handle
+  );
+
+  // Check for credentials first
+  if (!KOREADER_STORE.hasCredentials()) {
+    state = NO_CREDENTIALS;
+    updateRequired = true;
+    return;
+  }
+
+  // Turn on WiFi
+  Serial.printf("[%lu] [KOSync] Turning on WiFi...\n", millis());
+  WiFi.mode(WIFI_STA);
+
+  // Check if already connected
+  if (WiFi.status() == WL_CONNECTED) {
+    Serial.printf("[%lu] [KOSync] Already connected to WiFi\n", millis());
+    state = SYNCING;
+    statusMessage = "Syncing time...";
+    updateRequired = true;
+
+    // Perform sync directly (will be handled in loop)
+    xTaskCreate(
+        [](void* param) {
+          auto* self = static_cast<KOReaderSyncActivity*>(param);
+          // Sync time first
+          syncTimeWithNTP();
+          xSemaphoreTake(self->renderingMutex, portMAX_DELAY);
+          self->statusMessage = "Calculating document hash...";
+          xSemaphoreGive(self->renderingMutex);
+          self->updateRequired = true;
+          self->performSync();
+          vTaskDelete(nullptr);
+        },
+        "SyncTask", 4096, this, 1, nullptr);
+    return;
+  }
+
+  // Launch WiFi selection subactivity
+  Serial.printf("[%lu] [KOSync] Launching WifiSelectionActivity...\n", millis());
+  enterNewActivity(new WifiSelectionActivity(renderer, mappedInput,
+                                             [this](const bool connected) { onWifiSelectionComplete(connected); }));
+}
+
+void KOReaderSyncActivity::onExit() {
+  ActivityWithSubactivity::onExit();
+
+  // Turn off wifi
+  WiFi.disconnect(false);
+  delay(100);
+  WiFi.mode(WIFI_OFF);
+  delay(100);
+
+  // Wait until not rendering to delete task
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  if (displayTaskHandle) {
+    vTaskDelete(displayTaskHandle);
+    displayTaskHandle = nullptr;
+  }
+  vSemaphoreDelete(renderingMutex);
+  renderingMutex = nullptr;
+}
+
+void KOReaderSyncActivity::displayTaskLoop() {
+  while (true) {
+    if (updateRequired) {
+      updateRequired = false;
+      xSemaphoreTake(renderingMutex, portMAX_DELAY);
+      render();
+      xSemaphoreGive(renderingMutex);
+    }
+    vTaskDelay(10 / portTICK_PERIOD_MS);
+  }
+}
+
+void KOReaderSyncActivity::render() {
+  if (subActivity) {
+    return;
+  }
+
+  const auto pageWidth = renderer.getScreenWidth();
+
+  renderer.clearScreen();
+  renderer.drawCenteredText(UI_12_FONT_ID, 15, "KOReader Sync", true, EpdFontFamily::BOLD);
+
+  if (state == NO_CREDENTIALS) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 280, "No credentials configured", true, EpdFontFamily::BOLD);
+    renderer.drawCenteredText(UI_10_FONT_ID, 320, "Set up KOReader account in Settings");
+
+    const auto labels = mappedInput.mapLabels("Back", "", "", "");
+    renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+    renderer.displayBuffer();
+    return;
+  }
+
+  if (state == SYNCING || state == UPLOADING) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 300, statusMessage.c_str(), true, EpdFontFamily::BOLD);
+    renderer.displayBuffer();
+    return;
+  }
+
+  if (state == SHOWING_RESULT) {
+    // Show comparison
+    renderer.drawCenteredText(UI_10_FONT_ID, 120, "Progress found!", true, EpdFontFamily::BOLD);
+
+    // Get chapter names from TOC
+    const int remoteTocIndex = epub->getTocIndexForSpineIndex(remotePosition.spineIndex);
+    const int localTocIndex = epub->getTocIndexForSpineIndex(currentSpineIndex);
+    const std::string remoteChapter = (remoteTocIndex >= 0)
+                                          ? epub->getTocItem(remoteTocIndex).title
+                                          : ("Section " + std::to_string(remotePosition.spineIndex + 1));
+    const std::string localChapter = (localTocIndex >= 0) ? epub->getTocItem(localTocIndex).title
+                                                          : ("Section " + std::to_string(currentSpineIndex + 1));
+
+    // Remote progress - chapter and page
+    renderer.drawText(UI_10_FONT_ID, 20, 160, "Remote:", true);
+    char remoteChapterStr[128];
+    snprintf(remoteChapterStr, sizeof(remoteChapterStr), "  %s", remoteChapter.c_str());
+    renderer.drawText(UI_10_FONT_ID, 20, 185, remoteChapterStr);
+    char remotePageStr[64];
+    snprintf(remotePageStr, sizeof(remotePageStr), "  Page %d, %.2f%% overall", remotePosition.pageNumber + 1,
+             remoteProgress.percentage * 100);
+    renderer.drawText(UI_10_FONT_ID, 20, 210, remotePageStr);
+
+    if (!remoteProgress.device.empty()) {
+      char deviceStr[64];
+      snprintf(deviceStr, sizeof(deviceStr), "  From: %s", remoteProgress.device.c_str());
+      renderer.drawText(UI_10_FONT_ID, 20, 235, deviceStr);
+    }
+
+    // Local progress - chapter and page
+    renderer.drawText(UI_10_FONT_ID, 20, 270, "Local:", true);
+    char localChapterStr[128];
+    snprintf(localChapterStr, sizeof(localChapterStr), "  %s", localChapter.c_str());
+    renderer.drawText(UI_10_FONT_ID, 20, 295, localChapterStr);
+    char localPageStr[64];
+    snprintf(localPageStr, sizeof(localPageStr), "  Page %d/%d, %.2f%% overall", currentPage + 1, totalPagesInSpine,
+             localProgress.percentage * 100);
+    renderer.drawText(UI_10_FONT_ID, 20, 320, localPageStr);
+
+    // Options
+    const int optionY = 350;
+    const int optionHeight = 30;
+
+    // Apply option
+    if (selectedOption == 0) {
+      renderer.fillRect(0, optionY - 2, pageWidth - 1, optionHeight);
+    }
+    renderer.drawText(UI_10_FONT_ID, 20, optionY, "Apply remote progress", selectedOption != 0);
+
+    // Upload option
+    if (selectedOption == 1) {
+      renderer.fillRect(0, optionY + optionHeight - 2, pageWidth - 1, optionHeight);
+    }
+    renderer.drawText(UI_10_FONT_ID, 20, optionY + optionHeight, "Upload local progress", selectedOption != 1);
+
+    // Cancel option
+    if (selectedOption == 2) {
+      renderer.fillRect(0, optionY + optionHeight * 2 - 2, pageWidth - 1, optionHeight);
+    }
+    renderer.drawText(UI_10_FONT_ID, 20, optionY + optionHeight * 2, "Cancel", selectedOption != 2);
+
+    const auto labels = mappedInput.mapLabels("", "Select", "", "");
+    renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+    renderer.displayBuffer();
+    return;
+  }
+
+  if (state == NO_REMOTE_PROGRESS) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 280, "No remote progress found", true, EpdFontFamily::BOLD);
+    renderer.drawCenteredText(UI_10_FONT_ID, 320, "Upload current position?");
+
+    const auto labels = mappedInput.mapLabels("Cancel", "Upload", "", "");
+    renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+    renderer.displayBuffer();
+    return;
+  }
+
+  if (state == UPLOAD_COMPLETE) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 300, "Progress uploaded!", true, EpdFontFamily::BOLD);
+
+    const auto labels = mappedInput.mapLabels("Back", "", "", "");
+    renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+    renderer.displayBuffer();
+    return;
+  }
+
+  if (state == SYNC_FAILED) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 280, "Sync failed", true, EpdFontFamily::BOLD);
+    renderer.drawCenteredText(UI_10_FONT_ID, 320, statusMessage.c_str());
+
+    const auto labels = mappedInput.mapLabels("Back", "", "", "");
+    renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+    renderer.displayBuffer();
+    return;
+  }
+}
+
+void KOReaderSyncActivity::loop() {
+  if (subActivity) {
+    subActivity->loop();
+    return;
+  }
+
+  if (state == NO_CREDENTIALS || state == SYNC_FAILED || state == UPLOAD_COMPLETE) {
+    if (mappedInput.wasPressed(MappedInputManager::Button::Back)) {
+      onCancel();
+    }
+    return;
+  }
+
+  if (state == SHOWING_RESULT) {
+    // Navigate options
+    if (mappedInput.wasPressed(MappedInputManager::Button::Up) ||
+        mappedInput.wasPressed(MappedInputManager::Button::Left)) {
+      selectedOption = (selectedOption + 2) % 3;  // Wrap around
+      updateRequired = true;
+    } else if (mappedInput.wasPressed(MappedInputManager::Button::Down) ||
+               mappedInput.wasPressed(MappedInputManager::Button::Right)) {
+      selectedOption = (selectedOption + 1) % 3;
+      updateRequired = true;
+    }
+
+    if (mappedInput.wasPressed(MappedInputManager::Button::Confirm)) {
+      if (selectedOption == 0) {
+        // Apply remote progress
+        onSyncComplete(remotePosition.spineIndex, remotePosition.pageNumber);
+      } else if (selectedOption == 1) {
+        // Upload local progress
+        performUpload();
+      } else {
+        // Cancel
+        onCancel();
+      }
+    }
+
+    if (mappedInput.wasPressed(MappedInputManager::Button::Back)) {
+      onCancel();
+    }
+    return;
+  }
+
+  if (state == NO_REMOTE_PROGRESS) {
+    if (mappedInput.wasPressed(MappedInputManager::Button::Confirm)) {
+      // Calculate hash if not done yet
+      if (documentHash.empty()) {
+        if (KOREADER_STORE.getMatchMethod() == DocumentMatchMethod::FILENAME) {
+          documentHash = KOReaderDocumentId::calculateFromFilename(epubPath);
+        } else {
+          documentHash = KOReaderDocumentId::calculate(epubPath);
+        }
+      }
+      performUpload();
+    }
+
+    if (mappedInput.wasPressed(MappedInputManager::Button::Back)) {
+      onCancel();
+    }
+    return;
+  }
+}

src/activities/reader/KOReaderSyncActivity.h

@@ -0,0 +1,98 @@
+#pragma once
+#include <Epub.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/semphr.h>
+#include <freertos/task.h>
+
+#include <functional>
+#include <memory>
+
+#include "KOReaderSyncClient.h"
+#include "ProgressMapper.h"
+#include "activities/ActivityWithSubactivity.h"
+
+/**
+ * Activity for syncing reading progress with KOReader sync server.
+ *
+ * Flow:
+ * 1. Connect to WiFi (if not connected)
+ * 2. Calculate document hash
+ * 3. Fetch remote progress
+ * 4. Show comparison and options (Apply/Upload/Cancel)
+ * 5. Apply or upload progress
+ */
+class KOReaderSyncActivity final : public ActivityWithSubactivity {
+ public:
+  using OnCancelCallback = std::function<void()>;
+  using OnSyncCompleteCallback = std::function<void(int newSpineIndex, int newPageNumber)>;
+
+  explicit KOReaderSyncActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
+                                const std::shared_ptr<Epub>& epub, const std::string& epubPath, int currentSpineIndex,
+                                int currentPage, int totalPagesInSpine, OnCancelCallback onCancel,
+                                OnSyncCompleteCallback onSyncComplete)
+      : ActivityWithSubactivity("KOReaderSync", renderer, mappedInput),
+        epub(epub),
+        epubPath(epubPath),
+        currentSpineIndex(currentSpineIndex),
+        currentPage(currentPage),
+        totalPagesInSpine(totalPagesInSpine),
+        remoteProgress{},
+        remotePosition{},
+        localProgress{},
+        onCancel(std::move(onCancel)),
+        onSyncComplete(std::move(onSyncComplete)) {}
+
+  void onEnter() override;
+  void onExit() override;
+  void loop() override;
+  bool preventAutoSleep() override { return state == CONNECTING || state == SYNCING; }
+
+ private:
+  enum State {
+    WIFI_SELECTION,
+    CONNECTING,
+    SYNCING,
+    SHOWING_RESULT,
+    UPLOADING,
+    UPLOAD_COMPLETE,
+    NO_REMOTE_PROGRESS,
+    SYNC_FAILED,
+    NO_CREDENTIALS
+  };
+
+  std::shared_ptr<Epub> epub;
+  std::string epubPath;
+  int currentSpineIndex;
+  int currentPage;
+  int totalPagesInSpine;
+
+  TaskHandle_t displayTaskHandle = nullptr;
+  SemaphoreHandle_t renderingMutex = nullptr;
+  bool updateRequired = false;
+
+  State state = WIFI_SELECTION;
+  std::string statusMessage;
+  std::string documentHash;
+
+  // Remote progress data
+  bool hasRemoteProgress = false;
+  KOReaderProgress remoteProgress;
+  CrossPointPosition remotePosition;
+
+  // Local progress as KOReader format (for display)
+  KOReaderPosition localProgress;
+
+  // Selection in result screen (0=Apply, 1=Upload, 2=Cancel)
+  int selectedOption = 0;
+
+  OnCancelCallback onCancel;
+  OnSyncCompleteCallback onSyncComplete;
+
+  void onWifiSelectionComplete(bool success);
+  void performSync();
+  void performUpload();
+
+  static void taskTrampoline(void* param);
+  [[noreturn]] void displayTaskLoop();
+  void render();
+};

src/activities/settings/KOReaderAuthActivity.cpp

@@ -0,0 +1,167 @@
+#include "KOReaderAuthActivity.h"
+
+#include <GfxRenderer.h>
+#include <WiFi.h>
+
+#include "KOReaderCredentialStore.h"
+#include "KOReaderSyncClient.h"
+#include "MappedInputManager.h"
+#include "activities/network/WifiSelectionActivity.h"
+#include "fontIds.h"
+
+void KOReaderAuthActivity::taskTrampoline(void* param) {
+  auto* self = static_cast<KOReaderAuthActivity*>(param);
+  self->displayTaskLoop();
+}
+
+void KOReaderAuthActivity::onWifiSelectionComplete(const bool success) {
+  exitActivity();
+
+  if (!success) {
+    xSemaphoreTake(renderingMutex, portMAX_DELAY);
+    state = FAILED;
+    errorMessage = "WiFi connection failed";
+    xSemaphoreGive(renderingMutex);
+    updateRequired = true;
+    return;
+  }
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  state = AUTHENTICATING;
+  statusMessage = "Authenticating...";
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+
+  performAuthentication();
+}
+
+void KOReaderAuthActivity::performAuthentication() {
+  const auto result = KOReaderSyncClient::authenticate();
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  if (result == KOReaderSyncClient::OK) {
+    state = SUCCESS;
+    statusMessage = "Successfully authenticated!";
+  } else {
+    state = FAILED;
+    errorMessage = KOReaderSyncClient::errorString(result);
+  }
+  xSemaphoreGive(renderingMutex);
+  updateRequired = true;
+}
+
+void KOReaderAuthActivity::onEnter() {
+  ActivityWithSubactivity::onEnter();
+
+  renderingMutex = xSemaphoreCreateMutex();
+
+  xTaskCreate(&KOReaderAuthActivity::taskTrampoline, "KOAuthTask",
+              4096,               // Stack size
+              this,               // Parameters
+              1,                  // Priority
+              &displayTaskHandle  // Task handle
+  );
+
+  // Turn on WiFi
+  WiFi.mode(WIFI_STA);
+
+  // Check if already connected
+  if (WiFi.status() == WL_CONNECTED) {
+    state = AUTHENTICATING;
+    statusMessage = "Authenticating...";
+    updateRequired = true;
+
+    // Perform authentication in a separate task
+    xTaskCreate(
+        [](void* param) {
+          auto* self = static_cast<KOReaderAuthActivity*>(param);
+          self->performAuthentication();
+          vTaskDelete(nullptr);
+        },
+        "AuthTask", 4096, this, 1, nullptr);
+    return;
+  }
+
+  // Launch WiFi selection
+  enterNewActivity(new WifiSelectionActivity(renderer, mappedInput,
+                                             [this](const bool connected) { onWifiSelectionComplete(connected); }));
+}
+
+void KOReaderAuthActivity::onExit() {
+  ActivityWithSubactivity::onExit();
+
+  // Turn off wifi
+  WiFi.disconnect(false);
+  delay(100);
+  WiFi.mode(WIFI_OFF);
+  delay(100);
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  if (displayTaskHandle) {
+    vTaskDelete(displayTaskHandle);
+    displayTaskHandle = nullptr;
+  }
+  vSemaphoreDelete(renderingMutex);
+  renderingMutex = nullptr;
+}
+
+void KOReaderAuthActivity::displayTaskLoop() {
+  while (true) {
+    if (updateRequired && !subActivity) {
+      updateRequired = false;
+      xSemaphoreTake(renderingMutex, portMAX_DELAY);
+      render();
+      xSemaphoreGive(renderingMutex);
+    }
+    vTaskDelay(10 / portTICK_PERIOD_MS);
+  }
+}
+
+void KOReaderAuthActivity::render() {
+  if (subActivity) {
+    return;
+  }
+
+  renderer.clearScreen();
+  renderer.drawCenteredText(UI_12_FONT_ID, 15, "KOReader Auth", true, EpdFontFamily::BOLD);
+
+  if (state == AUTHENTICATING) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 300, statusMessage.c_str(), true, EpdFontFamily::BOLD);
+    renderer.displayBuffer();
+    return;
+  }
+
+  if (state == SUCCESS) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 280, "Success!", true, EpdFontFamily::BOLD);
+    renderer.drawCenteredText(UI_10_FONT_ID, 320, "KOReader sync is ready to use");
+
+    const auto labels = mappedInput.mapLabels("Done", "", "", "");
+    renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+    renderer.displayBuffer();
+    return;
+  }
+
+  if (state == FAILED) {
+    renderer.drawCenteredText(UI_10_FONT_ID, 280, "Authentication Failed", true, EpdFontFamily::BOLD);
+    renderer.drawCenteredText(UI_10_FONT_ID, 320, errorMessage.c_str());
+
+    const auto labels = mappedInput.mapLabels("Back", "", "", "");
+    renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+    renderer.displayBuffer();
+    return;
+  }
+}
+
+void KOReaderAuthActivity::loop() {
+  if (subActivity) {
+    subActivity->loop();
+    return;
+  }
+
+  if (state == SUCCESS || state == FAILED) {
+    if (mappedInput.wasPressed(MappedInputManager::Button::Back) ||
+        mappedInput.wasPressed(MappedInputManager::Button::Confirm)) {
+      onComplete();
+    }
+  }
+}

src/activities/settings/KOReaderAuthActivity.h

@@ -0,0 +1,44 @@
+#pragma once
+#include <freertos/FreeRTOS.h>
+#include <freertos/semphr.h>
+#include <freertos/task.h>
+
+#include <functional>
+
+#include "activities/ActivityWithSubactivity.h"
+
+/**
+ * Activity for testing KOReader credentials.
+ * Connects to WiFi and authenticates with the KOReader sync server.
+ */
+class KOReaderAuthActivity final : public ActivityWithSubactivity {
+ public:
+  explicit KOReaderAuthActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
+                                const std::function<void()>& onComplete)
+      : ActivityWithSubactivity("KOReaderAuth", renderer, mappedInput), onComplete(onComplete) {}
+
+  void onEnter() override;
+  void onExit() override;
+  void loop() override;
+  bool preventAutoSleep() override { return state == CONNECTING || state == AUTHENTICATING; }
+
+ private:
+  enum State { WIFI_SELECTION, CONNECTING, AUTHENTICATING, SUCCESS, FAILED };
+
+  TaskHandle_t displayTaskHandle = nullptr;
+  SemaphoreHandle_t renderingMutex = nullptr;
+  bool updateRequired = false;
+
+  State state = WIFI_SELECTION;
+  std::string statusMessage;
+  std::string errorMessage;
+
+  const std::function<void()> onComplete;
+
+  void onWifiSelectionComplete(bool success);
+  void performAuthentication();
+
+  static void taskTrampoline(void* param);
+  [[noreturn]] void displayTaskLoop();
+  void render();
+};

src/activities/settings/KOReaderSettingsActivity.cpp

@@ -0,0 +1,213 @@
+#include "KOReaderSettingsActivity.h"
+
+#include <GfxRenderer.h>
+
+#include <cstring>
+
+#include "KOReaderAuthActivity.h"
+#include "KOReaderCredentialStore.h"
+#include "MappedInputManager.h"
+#include "activities/util/KeyboardEntryActivity.h"
+#include "fontIds.h"
+
+namespace {
+constexpr int MENU_ITEMS = 5;
+const char* menuNames[MENU_ITEMS] = {"Username", "Password", "Sync Server URL", "Document Matching", "Authenticate"};
+}  // namespace
+
+void KOReaderSettingsActivity::taskTrampoline(void* param) {
+  auto* self = static_cast<KOReaderSettingsActivity*>(param);
+  self->displayTaskLoop();
+}
+
+void KOReaderSettingsActivity::onEnter() {
+  ActivityWithSubactivity::onEnter();
+
+  renderingMutex = xSemaphoreCreateMutex();
+  selectedIndex = 0;
+  updateRequired = true;
+
+  xTaskCreate(&KOReaderSettingsActivity::taskTrampoline, "KOReaderSettingsTask",
+              4096,               // Stack size
+              this,               // Parameters
+              1,                  // Priority
+              &displayTaskHandle  // Task handle
+  );
+}
+
+void KOReaderSettingsActivity::onExit() {
+  ActivityWithSubactivity::onExit();
+
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+  if (displayTaskHandle) {
+    vTaskDelete(displayTaskHandle);
+    displayTaskHandle = nullptr;
+  }
+  vSemaphoreDelete(renderingMutex);
+  renderingMutex = nullptr;
+}
+
+void KOReaderSettingsActivity::loop() {
+  if (subActivity) {
+    subActivity->loop();
+    return;
+  }
+
+  if (mappedInput.wasPressed(MappedInputManager::Button::Back)) {
+    onBack();
+    return;
+  }
+
+  if (mappedInput.wasPressed(MappedInputManager::Button::Confirm)) {
+    handleSelection();
+    return;
+  }
+
+  if (mappedInput.wasPressed(MappedInputManager::Button::Up) ||
+      mappedInput.wasPressed(MappedInputManager::Button::Left)) {
+    selectedIndex = (selectedIndex + MENU_ITEMS - 1) % MENU_ITEMS;
+    updateRequired = true;
+  } else if (mappedInput.wasPressed(MappedInputManager::Button::Down) ||
+             mappedInput.wasPressed(MappedInputManager::Button::Right)) {
+    selectedIndex = (selectedIndex + 1) % MENU_ITEMS;
+    updateRequired = true;
+  }
+}
+
+void KOReaderSettingsActivity::handleSelection() {
+  xSemaphoreTake(renderingMutex, portMAX_DELAY);
+
+  if (selectedIndex == 0) {
+    // Username
+    exitActivity();
+    enterNewActivity(new KeyboardEntryActivity(
+        renderer, mappedInput, "KOReader Username", KOREADER_STORE.getUsername(), 10,
+        64,     // maxLength
+        false,  // not password
+        [this](const std::string& username) {
+          KOREADER_STORE.setCredentials(username, KOREADER_STORE.getPassword());
+          KOREADER_STORE.saveToFile();
+          exitActivity();
+          updateRequired = true;
+        },
+        [this]() {
+          exitActivity();
+          updateRequired = true;
+        }));
+  } else if (selectedIndex == 1) {
+    // Password
+    exitActivity();
+    enterNewActivity(new KeyboardEntryActivity(
+        renderer, mappedInput, "KOReader Password", KOREADER_STORE.getPassword(), 10,
+        64,     // maxLength
+        false,  // show characters
+        [this](const std::string& password) {
+          KOREADER_STORE.setCredentials(KOREADER_STORE.getUsername(), password);
+          KOREADER_STORE.saveToFile();
+          exitActivity();
+          updateRequired = true;
+        },
+        [this]() {
+          exitActivity();
+          updateRequired = true;
+        }));
+  } else if (selectedIndex == 2) {
+    // Sync Server URL - prefill with https:// if empty to save typing
+    const std::string currentUrl = KOREADER_STORE.getServerUrl();
+    const std::string prefillUrl = currentUrl.empty() ? "https://" : currentUrl;
+    exitActivity();
+    enterNewActivity(new KeyboardEntryActivity(
+        renderer, mappedInput, "Sync Server URL", prefillUrl, 10,
+        128,    // maxLength - URLs can be long
+        false,  // not password
+        [this](const std::string& url) {
+          // Clear if user just left the prefilled https://
+          const std::string urlToSave = (url == "https://" || url == "http://") ? "" : url;
+          KOREADER_STORE.setServerUrl(urlToSave);
+          KOREADER_STORE.saveToFile();
+          exitActivity();
+          updateRequired = true;
+        },
+        [this]() {
+          exitActivity();
+          updateRequired = true;
+        }));
+  } else if (selectedIndex == 3) {
+    // Document Matching - toggle between Filename and Binary
+    const auto current = KOREADER_STORE.getMatchMethod();
+    const auto newMethod =
+        (current == DocumentMatchMethod::FILENAME) ? DocumentMatchMethod::BINARY : DocumentMatchMethod::FILENAME;
+    KOREADER_STORE.setMatchMethod(newMethod);
+    KOREADER_STORE.saveToFile();
+    updateRequired = true;
+  } else if (selectedIndex == 4) {
+    // Authenticate
+    if (!KOREADER_STORE.hasCredentials()) {
+      // Can't authenticate without credentials - just show message briefly
+      xSemaphoreGive(renderingMutex);
+      return;
+    }
+    exitActivity();
+    enterNewActivity(new KOReaderAuthActivity(renderer, mappedInput, [this] {
+      exitActivity();
+      updateRequired = true;
+    }));
+  }
+
+  xSemaphoreGive(renderingMutex);
+}
+
+void KOReaderSettingsActivity::displayTaskLoop() {
+  while (true) {
+    if (updateRequired && !subActivity) {
+      updateRequired = false;
+      xSemaphoreTake(renderingMutex, portMAX_DELAY);
+      render();
+      xSemaphoreGive(renderingMutex);
+    }
+    vTaskDelay(10 / portTICK_PERIOD_MS);
+  }
+}
+
+void KOReaderSettingsActivity::render() {
+  renderer.clearScreen();
+
+  const auto pageWidth = renderer.getScreenWidth();
+
+  // Draw header
+  renderer.drawCenteredText(UI_12_FONT_ID, 15, "KOReader Sync", true, EpdFontFamily::BOLD);
+
+  // Draw selection highlight
+  renderer.fillRect(0, 60 + selectedIndex * 30 - 2, pageWidth - 1, 30);
+
+  // Draw menu items
+  for (int i = 0; i < MENU_ITEMS; i++) {
+    const int settingY = 60 + i * 30;
+    const bool isSelected = (i == selectedIndex);
+
+    renderer.drawText(UI_10_FONT_ID, 20, settingY, menuNames[i], !isSelected);
+
+    // Draw status for each item
+    const char* status = "";
+    if (i == 0) {
+      status = KOREADER_STORE.getUsername().empty() ? "[Not Set]" : "[Set]";
+    } else if (i == 1) {
+      status = KOREADER_STORE.getPassword().empty() ? "[Not Set]" : "[Set]";
+    } else if (i == 2) {
+      status = KOREADER_STORE.getServerUrl().empty() ? "[Not Set]" : "[Set]";
+    } else if (i == 3) {
+      status = KOREADER_STORE.getMatchMethod() == DocumentMatchMethod::FILENAME ? "[Filename]" : "[Binary]";
+    } else if (i == 4) {
+      status = KOREADER_STORE.hasCredentials() ? "" : "[Set credentials first]";
+    }
+
+    const auto width = renderer.getTextWidth(UI_10_FONT_ID, status);
+    renderer.drawText(UI_10_FONT_ID, pageWidth - 20 - width, settingY, status, !isSelected);
+  }
+
+  // Draw button hints
+  const auto labels = mappedInput.mapLabels("« Back", "Select", "", "");
+  renderer.drawButtonHints(UI_10_FONT_ID, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+
+  renderer.displayBuffer();
+}

src/activities/settings/KOReaderSettingsActivity.h

@@ -0,0 +1,36 @@
+#pragma once
+#include <freertos/FreeRTOS.h>
+#include <freertos/semphr.h>
+#include <freertos/task.h>
+
+#include <functional>
+
+#include "activities/ActivityWithSubactivity.h"
+
+/**
+ * Submenu for KOReader Sync settings.
+ * Shows username, password, and authenticate options.
+ */
+class KOReaderSettingsActivity final : public ActivityWithSubactivity {
+ public:
+  explicit KOReaderSettingsActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
+                                    const std::function<void()>& onBack)
+      : ActivityWithSubactivity("KOReaderSettings", renderer, mappedInput), onBack(onBack) {}
+
+  void onEnter() override;
+  void onExit() override;
+  void loop() override;
+
+ private:
+  TaskHandle_t displayTaskHandle = nullptr;
+  SemaphoreHandle_t renderingMutex = nullptr;
+  bool updateRequired = false;
+
+  int selectedIndex = 0;
+  const std::function<void()> onBack;
+
+  static void taskTrampoline(void* param);
+  [[noreturn]] void displayTaskLoop();
+  void render();
+  void handleSelection();
+};

src/activities/settings/SettingsActivity.cpp

@@ -7,13 +7,14 @@
 
 #include "CalibreSettingsActivity.h"
 #include "CrossPointSettings.h"
+#include "KOReaderSettingsActivity.h"
 #include "MappedInputManager.h"
 #include "OtaUpdateActivity.h"
 #include "fontIds.h"
 
 // Define the static settings list
 namespace {
-constexpr int settingsCount = 20;
+constexpr int settingsCount = 22;
 const SettingInfo settingsList[settingsCount] = {
     // Should match with SLEEP_SCREEN_MODE
     SettingInfo::Enum("Sleep Screen", &CrossPointSettings::sleepScreen, {"Dark", "Light", "Custom", "Cover", "None"}),
@@ -37,10 +38,12 @@ const SettingInfo settingsList[settingsCount] = {
     SettingInfo::Value("Reader Screen Margin", &CrossPointSettings::screenMargin, {5, 40, 5}),
     SettingInfo::Enum("Reader Paragraph Alignment", &CrossPointSettings::paragraphAlignment,
                       {"Justify", "Left", "Center", "Right"}),
+    SettingInfo::Toggle("Hyphenation", &CrossPointSettings::hyphenationEnabled),
     SettingInfo::Enum("Time to Sleep", &CrossPointSettings::sleepTimeout,
                       {"1 min", "5 min", "10 min", "15 min", "30 min"}),
     SettingInfo::Enum("Refresh Frequency", &CrossPointSettings::refreshFrequency,
                       {"1 page", "5 pages", "10 pages", "15 pages", "30 pages"}),
+    SettingInfo::Action("KOReader Sync"),
     SettingInfo::Action("Calibre Settings"),
     SettingInfo::Action("Check for updates")};
 }  // namespace
@@ -115,7 +118,6 @@ void SettingsActivity::loop() {
 }
 
 void SettingsActivity::toggleCurrentSetting() {
-  // Validate index
   if (selectedSettingIndex < 0 || selectedSettingIndex >= settingsCount) {
     return;
   }
@@ -139,7 +141,15 @@ void SettingsActivity::toggleCurrentSetting() {
       SETTINGS.*(setting.valuePtr) = currentValue + setting.valueRange.step;
     }
   } else if (setting.type == SettingType::ACTION) {
-    if (strcmp(setting.name, "Calibre Settings") == 0) {
+    if (strcmp(setting.name, "KOReader Sync") == 0) {
+      xSemaphoreTake(renderingMutex, portMAX_DELAY);
+      exitActivity();
+      enterNewActivity(new KOReaderSettingsActivity(renderer, mappedInput, [this] {
+        exitActivity();
+        updateRequired = true;
+      }));
+      xSemaphoreGive(renderingMutex);
+    } else if (strcmp(setting.name, "Calibre Settings") == 0) {
       xSemaphoreTake(renderingMutex, portMAX_DELAY);
       exitActivity();
       enterNewActivity(new CalibreSettingsActivity(renderer, mappedInput, [this] {
@@ -186,18 +196,19 @@ void SettingsActivity::render() const {
   // Draw header
   renderer.drawCenteredText(UI_12_FONT_ID, 15, "Settings", true, EpdFontFamily::BOLD);
 
-  // Draw selection
+  // Draw selection highlight
   renderer.fillRect(0, 60 + selectedSettingIndex * 30 - 2, pageWidth - 1, 30);
 
   // Draw all settings
   for (int i = 0; i < settingsCount; i++) {
     const int settingY = 60 + i * 30;  // 30 pixels between settings
+    const bool isSelected = (i == selectedSettingIndex);
 
     // Draw setting name
-    renderer.drawText(UI_10_FONT_ID, 20, settingY, settingsList[i].name, i != selectedSettingIndex);
+    renderer.drawText(UI_10_FONT_ID, 20, settingY, settingsList[i].name, !isSelected);
 
     // Draw value based on setting type
-    std::string valueText = "";
+    std::string valueText;
     if (settingsList[i].type == SettingType::TOGGLE && settingsList[i].valuePtr != nullptr) {
       const bool value = SETTINGS.*(settingsList[i].valuePtr);
       valueText = value ? "ON" : "OFF";
@@ -207,8 +218,10 @@ void SettingsActivity::render() const {
     } else if (settingsList[i].type == SettingType::VALUE && settingsList[i].valuePtr != nullptr) {
       valueText = std::to_string(SETTINGS.*(settingsList[i].valuePtr));
     }
-    const auto width = renderer.getTextWidth(UI_10_FONT_ID, valueText.c_str());
-    renderer.drawText(UI_10_FONT_ID, pageWidth - 20 - width, settingY, valueText.c_str(), i != selectedSettingIndex);
+    if (!valueText.empty()) {
+      const auto width = renderer.getTextWidth(UI_10_FONT_ID, valueText.c_str());
+      renderer.drawText(UI_10_FONT_ID, pageWidth - 20 - width, settingY, valueText.c_str(), !isSelected);
+    }
   }
 
   // Draw version text above button hints

src/activities/util/KeyboardEntryActivity.cpp

@@ -73,7 +73,7 @@ int KeyboardEntryActivity::getRowLength(const int row) const {
     case 3:
       return 10;  // zxcvbnm,./
     case 4:
-      return 10;  // caps (2 wide), space (5 wide), backspace (2 wide), OK
+      return 10;  // shift (2 wide), space (5 wide), backspace (2 wide), OK
     default:
       return 0;
   }
@@ -145,6 +145,11 @@ void KeyboardEntryActivity::loop() {
       // Clamp column to valid range for new row
       const int maxCol = getRowLength(selectedRow) - 1;
       if (selectedCol > maxCol) selectedCol = maxCol;
+    } else {
+      // Wrap to bottom row
+      selectedRow = NUM_ROWS - 1;
+      const int maxCol = getRowLength(selectedRow) - 1;
+      if (selectedCol > maxCol) selectedCol = maxCol;
     }
     updateRequired = true;
   }
@@ -154,16 +159,24 @@ void KeyboardEntryActivity::loop() {
       selectedRow++;
       const int maxCol = getRowLength(selectedRow) - 1;
       if (selectedCol > maxCol) selectedCol = maxCol;
+    } else {
+      // Wrap to top row
+      selectedRow = 0;
+      const int maxCol = getRowLength(selectedRow) - 1;
+      if (selectedCol > maxCol) selectedCol = maxCol;
     }
     updateRequired = true;
   }
 
   if (mappedInput.wasPressed(MappedInputManager::Button::Left)) {
+    const int maxCol = getRowLength(selectedRow) - 1;
+
     // Special bottom row case
     if (selectedRow == SPECIAL_ROW) {
       // Bottom row has special key widths
       if (selectedCol >= SHIFT_COL && selectedCol < SPACE_COL) {
-        // In shift key, do nothing
+        // In shift key, wrap to end of row
+        selectedCol = maxCol;
       } else if (selectedCol >= SPACE_COL && selectedCol < BACKSPACE_COL) {
         // In space bar, move to shift
         selectedCol = SHIFT_COL;
@@ -180,10 +193,9 @@ void KeyboardEntryActivity::loop() {
 
     if (selectedCol > 0) {
       selectedCol--;
-    } else if (selectedRow > 0) {
-      // Wrap to previous row
-      selectedRow--;
-      selectedCol = getRowLength(selectedRow) - 1;
+    } else {
+      // Wrap to end of current row
+      selectedCol = maxCol;
     }
     updateRequired = true;
   }
@@ -204,7 +216,8 @@ void KeyboardEntryActivity::loop() {
         // In backspace, move to done
         selectedCol = DONE_COL;
       } else if (selectedCol >= DONE_COL) {
-        // At done button, do nothing
+        // At done button, wrap to beginning of row
+        selectedCol = SHIFT_COL;
       }
       updateRequired = true;
       return;
@@ -212,9 +225,8 @@ void KeyboardEntryActivity::loop() {
 
     if (selectedCol < maxCol) {
       selectedCol++;
-    } else if (selectedRow < NUM_ROWS - 1) {
-      // Wrap to next row
-      selectedRow++;
+    } else {
+      // Wrap to beginning of current row
       selectedCol = 0;
     }
     updateRequired = true;
@@ -288,14 +300,14 @@ void KeyboardEntryActivity::render() const {
 
     // Handle bottom row (row 4) specially with proper multi-column keys
     if (row == 4) {
-      // Bottom row layout: CAPS (2 cols) | SPACE (5 cols) | <- (2 cols) | OK (2 cols)
+      // Bottom row layout: SHIFT (2 cols) | SPACE (5 cols) | <- (2 cols) | OK (2 cols)
       // Total: 11 visual columns, but we use logical positions for selection
 
       int currentX = startX;
 
-      // CAPS key (logical col 0, spans 2 key widths)
-      const bool capsSelected = (selectedRow == 4 && selectedCol >= SHIFT_COL && selectedCol < SPACE_COL);
-      renderItemWithSelector(currentX + 2, rowY, shiftActive ? "CAPS" : "caps", capsSelected);
+      // SHIFT key (logical col 0, spans 2 key widths)
+      const bool shiftSelected = (selectedRow == 4 && selectedCol >= SHIFT_COL && selectedCol < SPACE_COL);
+      renderItemWithSelector(currentX + 2, rowY, shiftActive ? "SHIFT" : "shift", shiftSelected);
       currentX += 2 * (keyWidth + keySpacing);
 
       // Space bar (logical cols 2-6, spans 5 key widths)

src/main.cpp

@@ -12,6 +12,7 @@
 #include "Battery.h"
 #include "CrossPointSettings.h"
 #include "CrossPointState.h"
+#include "KOReaderCredentialStore.h"
 #include "MappedInputManager.h"
 #include "activities/boot_sleep/BootActivity.h"
 #include "activities/boot_sleep/SleepActivity.h"
@@ -289,6 +290,7 @@ void setup() {
   }
 
   SETTINGS.loadFromFile();
+  KOREADER_STORE.loadFromFile();
 
   // verify power button press duration after we've read settings.
   verifyWakeupLongPress();

test/hyphenation_eval/HyphenationEvaluationTest.cpp

@@ -0,0 +1,388 @@
+#include <Utf8.h>
+
+#include <algorithm>
+#include <cctype>
+#include <cmath>
+#include <fstream>
+#include <functional>
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include "lib/Epub/Epub/hyphenation/HyphenationCommon.h"
+#include "lib/Epub/Epub/hyphenation/LanguageHyphenator.h"
+#include "lib/Epub/Epub/hyphenation/LanguageRegistry.h"
+
+struct TestCase {
+  std::string word;
+  std::string hyphenated;
+  std::vector<size_t> expectedPositions;
+  int frequency;
+};
+
+struct EvaluationResult {
+  int truePositives = 0;
+  int falsePositives = 0;
+  int falseNegatives = 0;
+  double precision = 0.0;
+  double recall = 0.0;
+  double f1Score = 0.0;
+  double weightedScore = 0.0;
+};
+
+struct LanguageConfig {
+  std::string cliName;
+  std::string testDataFile;
+  const char* primaryTag;
+};
+
+const std::vector<LanguageConfig> kSupportedLanguages = {
+    {"english", "test/hyphenation_eval/resources/english_hyphenation_tests.txt", "en"},
+    {"french", "test/hyphenation_eval/resources/french_hyphenation_tests.txt", "fr"},
+    {"german", "test/hyphenation_eval/resources/german_hyphenation_tests.txt", "de"},
+    {"russian", "test/hyphenation_eval/resources/russian_hyphenation_tests.txt", "ru"},
+};
+
+std::vector<size_t> expectedPositionsFromAnnotatedWord(const std::string& annotated) {
+  std::vector<size_t> positions;
+  const unsigned char* ptr = reinterpret_cast<const unsigned char*>(annotated.c_str());
+  size_t codepointIndex = 0;
+
+  while (*ptr != 0) {
+    if (*ptr == '=') {
+      positions.push_back(codepointIndex);
+      ++ptr;
+      continue;
+    }
+
+    utf8NextCodepoint(&ptr);
+    ++codepointIndex;
+  }
+
+  return positions;
+}
+
+std::vector<TestCase> loadTestData(const std::string& filename) {
+  std::vector<TestCase> testCases;
+  std::ifstream file(filename);
+
+  if (!file.is_open()) {
+    std::cerr << "Error: Could not open file " << filename << std::endl;
+    return testCases;
+  }
+
+  std::string line;
+  while (std::getline(file, line)) {
+    if (line.empty() || line[0] == '#') {
+      continue;
+    }
+
+    std::istringstream iss(line);
+    std::string word, hyphenated, freqStr;
+
+    if (std::getline(iss, word, '|') && std::getline(iss, hyphenated, '|') && std::getline(iss, freqStr, '|')) {
+      TestCase testCase;
+      testCase.word = word;
+      testCase.hyphenated = hyphenated;
+      testCase.frequency = std::stoi(freqStr);
+
+      testCase.expectedPositions = expectedPositionsFromAnnotatedWord(hyphenated);
+
+      testCases.push_back(testCase);
+    }
+  }
+
+  file.close();
+  return testCases;
+}
+
+std::string positionsToHyphenated(const std::string& word, const std::vector<size_t>& positions) {
+  std::string result;
+  std::vector<size_t> sortedPositions = positions;
+  std::sort(sortedPositions.begin(), sortedPositions.end());
+
+  const unsigned char* ptr = reinterpret_cast<const unsigned char*>(word.c_str());
+  size_t codepointIndex = 0;
+  size_t posIdx = 0;
+
+  while (*ptr != 0) {
+    while (posIdx < sortedPositions.size() && sortedPositions[posIdx] == codepointIndex) {
+      result.push_back('=');
+      ++posIdx;
+    }
+
+    const unsigned char* current = ptr;
+    utf8NextCodepoint(&ptr);
+    result.append(reinterpret_cast<const char*>(current), reinterpret_cast<const char*>(ptr));
+    ++codepointIndex;
+  }
+
+  while (posIdx < sortedPositions.size() && sortedPositions[posIdx] == codepointIndex) {
+    result.push_back('=');
+    ++posIdx;
+  }
+
+  return result;
+}
+
+std::vector<size_t> hyphenateWordWithHyphenator(const std::string& word, const LanguageHyphenator& hyphenator) {
+  auto cps = collectCodepoints(word);
+  trimSurroundingPunctuationAndFootnote(cps);
+
+  return hyphenator.breakIndexes(cps);
+}
+
+std::vector<LanguageConfig> resolveLanguages(const std::string& selection) {
+  if (selection == "all") {
+    return kSupportedLanguages;
+  }
+
+  for (const auto& config : kSupportedLanguages) {
+    if (config.cliName == selection) {
+      return {config};
+    }
+  }
+
+  return {};
+}
+
+EvaluationResult evaluateWord(const TestCase& testCase,
+                              std::function<std::vector<size_t>(const std::string&)> hyphenateFunc) {
+  EvaluationResult result;
+
+  std::vector<size_t> actualPositions = hyphenateFunc(testCase.word);
+
+  std::vector<size_t> expected = testCase.expectedPositions;
+  std::vector<size_t> actual = actualPositions;
+
+  std::sort(expected.begin(), expected.end());
+  std::sort(actual.begin(), actual.end());
+
+  for (size_t pos : actual) {
+    if (std::find(expected.begin(), expected.end(), pos) != expected.end()) {
+      result.truePositives++;
+    } else {
+      result.falsePositives++;
+    }
+  }
+
+  for (size_t pos : expected) {
+    if (std::find(actual.begin(), actual.end(), pos) == actual.end()) {
+      result.falseNegatives++;
+    }
+  }
+
+  if (result.truePositives + result.falsePositives > 0) {
+    result.precision = static_cast<double>(result.truePositives) / (result.truePositives + result.falsePositives);
+  }
+
+  if (result.truePositives + result.falseNegatives > 0) {
+    result.recall = static_cast<double>(result.truePositives) / (result.truePositives + result.falseNegatives);
+  }
+
+  if (result.precision + result.recall > 0) {
+    result.f1Score = 2 * result.precision * result.recall / (result.precision + result.recall);
+  }
+
+  // Treat words that contain no hyphenation marks in both the expected data and the
+  // algorithmic output as perfect matches so they don't drag down the per-word averages.
+  if (expected.empty() && actual.empty()) {
+    result.precision = 1.0;
+    result.recall = 1.0;
+    result.f1Score = 1.0;
+  }
+
+  double fpPenalty = 2.0;
+  double fnPenalty = 1.0;
+
+  int totalErrors = result.falsePositives * fpPenalty + result.falseNegatives * fnPenalty;
+  int totalPossible = expected.size() * fpPenalty;
+
+  if (totalPossible > 0) {
+    result.weightedScore = 1.0 - (static_cast<double>(totalErrors) / totalPossible);
+    result.weightedScore = std::max(0.0, result.weightedScore);
+  } else if (result.falsePositives == 0) {
+    result.weightedScore = 1.0;
+  }
+
+  return result;
+}
+
+void printResults(const std::string& language, const std::vector<TestCase>& testCases,
+                  const std::vector<std::pair<TestCase, EvaluationResult>>& worstCases, int perfectMatches,
+                  int partialMatches, int completeMisses, double totalPrecision, double totalRecall, double totalF1,
+                  double totalWeighted, int totalTP, int totalFP, int totalFN,
+                  std::function<std::vector<size_t>(const std::string&)> hyphenateFunc) {
+  std::string lang_upper = language;
+  if (!lang_upper.empty()) {
+    lang_upper[0] = std::toupper(lang_upper[0]);
+  }
+
+  std::cout << "================================================================================" << std::endl;
+  std::cout << lang_upper << " HYPHENATION EVALUATION RESULTS" << std::endl;
+  std::cout << "================================================================================" << std::endl;
+  std::cout << std::endl;
+
+  std::cout << "Total test cases:   " << testCases.size() << std::endl;
+  std::cout << "Perfect matches:    " << perfectMatches << " (" << (perfectMatches * 100.0 / testCases.size()) << "%)"
+            << std::endl;
+  std::cout << "Partial matches:    " << partialMatches << std::endl;
+  std::cout << "Complete misses:    " << completeMisses << std::endl;
+  std::cout << std::endl;
+
+  std::cout << "--- Overall Metrics (averaged per word) ---" << std::endl;
+  std::cout << "Average Precision:       " << (totalPrecision / testCases.size() * 100.0) << "%" << std::endl;
+  std::cout << "Average Recall:          " << (totalRecall / testCases.size() * 100.0) << "%" << std::endl;
+  std::cout << "Average F1 Score:        " << (totalF1 / testCases.size() * 100.0) << "%" << std::endl;
+  std::cout << "Average Weighted Score:  " << (totalWeighted / testCases.size() * 100.0) << "% (FP penalty: 2x)"
+            << std::endl;
+  std::cout << std::endl;
+
+  std::cout << "--- Overall Metrics (total counts) ---" << std::endl;
+  std::cout << "True Positives:          " << totalTP << std::endl;
+  std::cout << "False Positives:         " << totalFP << " (incorrect hyphenation points)" << std::endl;
+  std::cout << "False Negatives:         " << totalFN << " (missed hyphenation points)" << std::endl;
+
+  double overallPrecision = totalTP + totalFP > 0 ? static_cast<double>(totalTP) / (totalTP + totalFP) : 0.0;
+  double overallRecall = totalTP + totalFN > 0 ? static_cast<double>(totalTP) / (totalTP + totalFN) : 0.0;
+  double overallF1 = overallPrecision + overallRecall > 0
+                         ? 2 * overallPrecision * overallRecall / (overallPrecision + overallRecall)
+                         : 0.0;
+
+  std::cout << "Overall Precision:       " << (overallPrecision * 100.0) << "%" << std::endl;
+  std::cout << "Overall Recall:          " << (overallRecall * 100.0) << "%" << std::endl;
+  std::cout << "Overall F1 Score:        " << (overallF1 * 100.0) << "%" << std::endl;
+  std::cout << std::endl;
+
+  // Filter out perfect matches from the “worst cases” section so that only actionable failures appear.
+  auto hasImperfection = [](const EvaluationResult& r) { return r.weightedScore < 0.999999; };
+  std::vector<std::pair<TestCase, EvaluationResult>> imperfectCases;
+  imperfectCases.reserve(worstCases.size());
+  for (const auto& entry : worstCases) {
+    if (hasImperfection(entry.second)) {
+      imperfectCases.push_back(entry);
+    }
+  }
+
+  std::cout << "--- Worst Cases (lowest weighted scores) ---" << std::endl;
+  int showCount = std::min(10, static_cast<int>(imperfectCases.size()));
+  for (int i = 0; i < showCount; i++) {
+    const auto& testCase = imperfectCases[i].first;
+    const auto& result = imperfectCases[i].second;
+
+    std::vector<size_t> actualPositions = hyphenateFunc(testCase.word);
+    std::string actualHyphenated = positionsToHyphenated(testCase.word, actualPositions);
+
+    std::cout << "Word: " << testCase.word << " (freq: " << testCase.frequency << ")" << std::endl;
+    std::cout << "  Expected:  " << testCase.hyphenated << std::endl;
+    std::cout << "  Got:       " << actualHyphenated << std::endl;
+    std::cout << "  Precision: " << (result.precision * 100.0) << "%"
+              << "  Recall: " << (result.recall * 100.0) << "%"
+              << "  F1: " << (result.f1Score * 100.0) << "%"
+              << "  Weighted: " << (result.weightedScore * 100.0) << "%" << std::endl;
+    std::cout << "  TP: " << result.truePositives << "  FP: " << result.falsePositives
+              << "  FN: " << result.falseNegatives << std::endl;
+    std::cout << std::endl;
+  }
+
+  // Additional compact list of the worst ~100 words to aid iteration
+  int compactCount = std::min(100, static_cast<int>(imperfectCases.size()));
+  if (compactCount > 0) {
+    std::cout << "--- Compact Worst Cases (" << compactCount << ") ---" << std::endl;
+    for (int i = 0; i < compactCount; i++) {
+      const auto& testCase = imperfectCases[i].first;
+      std::vector<size_t> actualPositions = hyphenateFunc(testCase.word);
+      std::string actualHyphenated = positionsToHyphenated(testCase.word, actualPositions);
+      std::cout << testCase.word << " | exp:" << testCase.hyphenated << " | got:" << actualHyphenated << std::endl;
+    }
+    std::cout << std::endl;
+  }
+}
+
+int main(int argc, char* argv[]) {
+  const bool summaryMode = argc <= 1;
+  const std::string languageSelection = summaryMode ? "all" : argv[1];
+
+  std::vector<LanguageConfig> languages = resolveLanguages(languageSelection);
+  if (languages.empty()) {
+    std::cerr << "Unknown language: " << languageSelection << std::endl;
+    return 1;
+  }
+
+  for (const auto& lang : languages) {
+    const auto* hyphenator = getLanguageHyphenatorForPrimaryTag(lang.primaryTag);
+    if (!hyphenator) {
+      std::cerr << "No hyphenator registered for tag: " << lang.primaryTag << std::endl;
+      continue;
+    }
+    const auto hyphenateFunc = [hyphenator](const std::string& word) {
+      return hyphenateWordWithHyphenator(word, *hyphenator);
+    };
+
+    if (!summaryMode) {
+      std::cout << "Loading test data from: " << lang.testDataFile << std::endl;
+    }
+    std::vector<TestCase> testCases = loadTestData(lang.testDataFile);
+
+    if (testCases.empty()) {
+      std::cerr << "No test cases loaded for " << lang.cliName << ". Skipping." << std::endl;
+      continue;
+    }
+
+    if (!summaryMode) {
+      std::cout << "Loaded " << testCases.size() << " test cases for " << lang.cliName << std::endl;
+      std::cout << std::endl;
+    }
+
+    int perfectMatches = 0;
+    int partialMatches = 0;
+    int completeMisses = 0;
+
+    double totalPrecision = 0.0;
+    double totalRecall = 0.0;
+    double totalF1 = 0.0;
+    double totalWeighted = 0.0;
+
+    int totalTP = 0, totalFP = 0, totalFN = 0;
+
+    std::vector<std::pair<TestCase, EvaluationResult>> worstCases;
+
+    for (const auto& testCase : testCases) {
+      EvaluationResult result = evaluateWord(testCase, hyphenateFunc);
+
+      totalTP += result.truePositives;
+      totalFP += result.falsePositives;
+      totalFN += result.falseNegatives;
+
+      totalPrecision += result.precision;
+      totalRecall += result.recall;
+      totalF1 += result.f1Score;
+      totalWeighted += result.weightedScore;
+
+      if (result.f1Score == 1.0) {
+        perfectMatches++;
+      } else if (result.f1Score > 0.0) {
+        partialMatches++;
+      } else {
+        completeMisses++;
+      }
+
+      worstCases.push_back({testCase, result});
+    }
+
+    if (summaryMode) {
+      const double averageF1Percent = testCases.empty() ? 0.0 : (totalF1 / testCases.size() * 100.0);
+      std::cout << lang.cliName << ": " << averageF1Percent << "%" << std::endl;
+      continue;
+    }
+
+    std::sort(worstCases.begin(), worstCases.end(),
+              [](const auto& a, const auto& b) { return a.second.weightedScore < b.second.weightedScore; });
+
+    printResults(lang.cliName, testCases, worstCases, perfectMatches, partialMatches, completeMisses, totalPrecision,
+                 totalRecall, totalF1, totalWeighted, totalTP, totalFP, totalFN, hyphenateFunc);
+  }
+
+  return 0;
+}

test/hyphenation_eval/resources/generate_hyphenation_test_data.py

@@ -0,0 +1,232 @@
+"""
+Generate hyphenation test data from a text file.
+
+This script extracts unique words from a book and generates ground truth
+hyphenations using the pyphen library, which can be used to test and validate
+the hyphenation implementations (e.g., German, English, Russian).
+
+Usage:
+    python generate_hyphenation_test_data.py <input_file> <output_file>
+        [--language de_DE] [--max-words 5000] [--min-prefix 2] [--min-suffix 2]
+
+Requirements:
+    pip install pyphen
+"""
+
+import argparse
+import re
+from collections import Counter
+import pyphen
+from pathlib import Path
+import zipfile
+
+
+def extract_text_from_epub(epub_path):
+    """Extract textual content from an .epub archive by concatenating HTML/XHTML files."""
+    texts = []
+    with zipfile.ZipFile(epub_path, "r") as z:
+        for name in z.namelist():
+            lower = name.lower()
+            if (
+                lower.endswith(".xhtml")
+                or lower.endswith(".html")
+                or lower.endswith(".htm")
+            ):
+                try:
+                    data = z.read(name).decode("utf-8", errors="ignore")
+                except Exception:
+                    continue
+                # Remove tags
+                text = re.sub(r"<[^>]+>", " ", data)
+                texts.append(text)
+    return "\n".join(texts)
+
+
+def extract_words(text):
+    """Extract all words from text, preserving original case."""
+    # Match runs of Unicode letters (any script) while excluding digits/underscores
+    return re.findall(r"[^\W\d_]+", text, flags=re.UNICODE)
+
+
+def clean_word(word):
+    """Normalize word for hyphenation testing."""
+    # Keep original case but strip any non-letter characters
+    return word.strip()
+
+
+def generate_hyphenation_data(
+    input_file,
+    output_file,
+    language="de_DE",
+    min_length=6,
+    max_words=5000,
+    min_prefix=2,
+    min_suffix=2,
+):
+    """
+    Generate hyphenation test data from a text file.
+
+    Args:
+        input_file: Path to input text file
+        output_file: Path to output file with hyphenation data
+        language: Language code for pyphen (e.g., 'de_DE', 'en_US')
+        min_length: Minimum word length to include
+        max_words: Maximum number of words to include (default: 5000)
+        min_prefix: Minimum characters allowed before the first hyphen (default: 2)
+        min_suffix: Minimum characters allowed after the last hyphen (default: 2)
+    """
+    print(f"Reading from: {input_file}")
+
+    # Read the input file
+    if str(input_file).lower().endswith(".epub"):
+        print("Detected .epub input; extracting HTML content")
+        text = extract_text_from_epub(input_file)
+    else:
+        with open(input_file, "r", encoding="utf-8") as f:
+            text = f.read()
+
+    # Extract words
+    print("Extracting words...")
+    words = extract_words(text)
+    print(f"Found {len(words)} total words")
+
+    # Count word frequencies
+    word_counts = Counter(words)
+    print(f"Found {len(word_counts)} unique words")
+
+    # Initialize pyphen hyphenator
+    print(
+        f"Initializing hyphenator for language: {language} (min_prefix={min_prefix}, min_suffix={min_suffix})"
+    )
+    try:
+        hyphenator = pyphen.Pyphen(lang=language, left=min_prefix, right=min_suffix)
+    except KeyError:
+        print(f"Error: Language '{language}' not found in pyphen.")
+        print("Available languages include: de_DE, en_US, en_GB, fr_FR, etc.")
+        return
+
+    # Generate hyphenations
+    print("Generating hyphenations...")
+    hyphenation_data = []
+
+    # Sort by frequency (most common first) then alphabetically
+    sorted_words = sorted(word_counts.items(), key=lambda x: (-x[1], x[0].lower()))
+
+    for word, count in sorted_words:
+        # Filter by minimum length
+        if len(word) < min_length:
+            continue
+
+        # Get hyphenation (may produce no '=' characters)
+        hyphenated = hyphenator.inserted(word, hyphen="=")
+
+        # Include all words (so we can take the top N most common words even if
+        # they don't have hyphenation points). This replaces the previous filter
+        # which dropped words without '='.
+        hyphenation_data.append(
+            {"word": word, "hyphenated": hyphenated, "count": count}
+        )
+
+        # Stop if we've reached max_words
+        if max_words and len(hyphenation_data) >= max_words:
+            break
+
+    print(f"Generated {len(hyphenation_data)} hyphenated words")
+
+    # Write output file
+    print(f"Writing to: {output_file}")
+    with open(output_file, "w", encoding="utf-8") as f:
+        # Write header with metadata
+        f.write(f"# Hyphenation Test Data\n")
+        f.write(f"# Source: {Path(input_file).name}\n")
+        f.write(f"# Language: {language}\n")
+        f.write(f"# Min prefix: {min_prefix}\n")
+        f.write(f"# Min suffix: {min_suffix}\n")
+        f.write(f"# Total words: {len(hyphenation_data)}\n")
+        f.write(f"# Format: word | hyphenated_form | frequency_in_source\n")
+        f.write(f"#\n")
+        f.write(f"# Hyphenation points are marked with '='\n")
+        f.write(f"# Example: Silbentrennung -> Sil=ben=tren=nung\n")
+        f.write(f"#\n\n")
+
+        # Write data
+        for item in hyphenation_data:
+            f.write(f"{item['word']}|{item['hyphenated']}|{item['count']}\n")
+
+    print("Done!")
+
+    # Print some statistics
+    print("\n=== Statistics ===")
+    print(f"Total unique words extracted: {len(word_counts)}")
+    print(f"Words with hyphenation points: {len(hyphenation_data)}")
+    print(
+        f"Average hyphenation points per word: {sum(h['hyphenated'].count('=') for h in hyphenation_data) / len(hyphenation_data):.2f}"
+    )
+
+    # Print some examples
+    print("\n=== Examples (first 10) ===")
+    for item in hyphenation_data[:10]:
+        print(
+            f"  {item['word']:20} -> {item['hyphenated']:30} (appears {item['count']}x)"
+        )
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Generate hyphenation test data from a text file",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+Examples:
+  # Generate test data from a German book
+  python generate_hyphenation_test_data.py ../data/books/bobiverse_1.txt hyphenation_test_data.txt
+  
+  # Limit to 500 most common words
+  python generate_hyphenation_test_data.py ../data/books/bobiverse_1.txt hyphenation_test_data.txt --max-words 500
+  
+  # Use English hyphenation (when available)
+  python generate_hyphenation_test_data.py book.txt test_en.txt --language en_US
+        """,
+    )
+
+    parser.add_argument("input_file", help="Input text file to extract words from")
+    parser.add_argument("output_file", help="Output file for hyphenation test data")
+    parser.add_argument(
+        "--language", default="de_DE", help="Language code (default: de_DE)"
+    )
+    parser.add_argument(
+        "--min-length", type=int, default=6, help="Minimum word length (default: 6)"
+    )
+    parser.add_argument(
+        "--max-words",
+        type=int,
+        default=5000,
+        help="Maximum number of words to include (default: 5000)",
+    )
+    parser.add_argument(
+        "--min-prefix",
+        type=int,
+        default=2,
+        help="Minimum characters permitted before the first hyphen (default: 2)",
+    )
+    parser.add_argument(
+        "--min-suffix",
+        type=int,
+        default=2,
+        help="Minimum characters permitted after the last hyphen (default: 2)",
+    )
+
+    args = parser.parse_args()
+
+    generate_hyphenation_data(
+        args.input_file,
+        args.output_file,
+        language=args.language,
+        min_length=args.min_length,
+        max_words=args.max_words,
+        min_prefix=args.min_prefix,
+        min_suffix=args.min_suffix,
+    )
+
+
+if __name__ == "__main__":
+    main()

test/run_hyphenation_eval.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+BUILD_DIR="$ROOT_DIR/build/hyphenation_eval"
+BINARY="$BUILD_DIR/HyphenationEvaluationTest"
+
+mkdir -p "$BUILD_DIR"
+
+SOURCES=(
+  "$ROOT_DIR/test/hyphenation_eval/HyphenationEvaluationTest.cpp"
+  "$ROOT_DIR/lib/Epub/Epub/hyphenation/Hyphenator.cpp"
+  "$ROOT_DIR/lib/Epub/Epub/hyphenation/LanguageRegistry.cpp"
+  "$ROOT_DIR/lib/Epub/Epub/hyphenation/LiangHyphenation.cpp"
+  "$ROOT_DIR/lib/Epub/Epub/hyphenation/HyphenationCommon.cpp"
+  "$ROOT_DIR/lib/Utf8/Utf8.cpp"
+)
+
+CXXFLAGS=(
+  -std=c++20
+  -O2
+  -Wall
+  -Wextra
+  -pedantic
+  -I"$ROOT_DIR"
+  -I"$ROOT_DIR/lib"
+  -I"$ROOT_DIR/lib/Utf8"
+)
+
+c++ "${CXXFLAGS[@]}" "${SOURCES[@]}" -o "$BINARY"
+
+"$BINARY" "$@"