Gap 19: docs: ODT fidelity re-estimated at ~85%

This round added flow breaks, table placement, ruby, index marks, text
borders, connectors and custom properties. A 20,000-paragraph document
round-trips in about a second with nothing lost, and 400 fuzzed
documents opened without a crash.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GBVQLyDnrG8Tn1yDQcUabC

docs/file-format-parity.md

@@ -1,6 +1,6 @@
 # File-format parity with Microsoft Word
 
-> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-11-01 · **Change:** trivial (ODT custom document properties and user fields as DOCPROPERTY); previously trivial (ODT connectors read and written glued); previously trivial (ODT borders around text read and written); previously trivial (ODT index marks read and written as XE fields; an index held around its entries updates); previously trivial (ODT ruby read and written); previously trivial (ODT page breaks after a paragraph, kept lines, widow control, hyphenation, table alignment and width and row heights); previously trivial (in-line drawings raised or lowered by their run's position; ODT in-line frames keep their place on the baseline; leading's space after the last line; text box borders shown by LibreOffice); previously trivial (ODT form controls opened and saved as content controls); previously trivial (password-protected ODT opened and saved); previously trivial (ODT headers and footers keep their shapes, text boxes, charts and embedded objects on save); previously trivial (ODT embedded spreadsheets and OLE objects kept whole instead of lost; flat ODT sub-documents valid `office:document`s); previously trivial (ODT charts in drawing groups drawn on open); previously trivial (ODT charts opened and saved as editable charts; flat ODT sub-documents no longer end the body); previously trivial (ODT leading read as an at-least spacing); previously trivial (ODT tracked formatting changes; changed regions named by `xml:id`); previously trivial (ODT drop caps; tab stops no longer drop a paragraph's background); previously trivial (flat ODT `.fodt` opened and saved; ODT fidelity re-estimated at ~80%); previously trivial (ODT page settings; a footnote no longer takes a footer's text); previously trivial (ODT dates in their formats, sequences, chapters and references); previously trivial (ODT bookmarks over text); previously trivial (ODT tables of contents and indexes; ODT fidelity re-estimated); previously trivial (ODT polygons, polylines and paths); previously trivial (ODT arrowheads, dashes and gradients); previously trivial (ODT groups of shapes and pictures); previously trivial (ODT rotated and mirrored shapes and pictures); previously trivial (ODT drawing shapes read and written); previously trivial (ODT text box frames keep their line, fill, padding and fit); previously trivial (ODT Asian and complex-script fonts); previously trivial (ODT right-to-left paragraphs); previously trivial (ODT text boxes kept); previously trivial (ODT unnumbered headings detached from the outline); previously trivial (ODT contextual spacing and layout settings); previously trivial (ODT custom character styles kept); previously trivial (ODT list level positions); previously trivial (ODT custom paragraph styles kept); previously trivial (ODT equations written as formula objects); previously trivial (ODT numbered headings written as headings); previously trivial (ODT floating pictures); previously trivial (ODT paragraph borders and background); previously trivial (ODT heading numbering); previously trivial (ODT font-face names); previously trivial (ODT table cell borders and padding); previously trivial (ODT heading, title, quote and preformatted styles keep their look); previously trivial (ODT tab stops read and written); previously trivial (ODT character formatting read and written); previously trivial (ODT lists keep their number formats, bullets and identity); previously trivial (ODT comments read and written); previously trivial (ODT footnotes and endnotes read and written); previously trivial (ODT headers, footers and text fields written; fields read); previously trivial (ODT paragraph spacing, indents and line spacing read and written); previously trivial (a paragraph naming an undefined style is formatted as Normal, as in Word, #5077); previously trivial (a hyperlinked TOC writes its page numbers as `PAGEREF _Toc… \h` fields, as Word does, #5097); previously trivial (HTML import ends the empty comments <!--> and <!---> at once, #5040); previously trivial (chart and SmartArt text the font lacks is drawn in a fallback face, so Chinese labels no longer show boxes, #4720); previously trivial (bibliography sources keep a corporate author (`b:Corporate`): read, written, cited and listed whole, #4848); previously trivial (custom-property bookmark-link preservation, #4767); previously trivial (note conversion preserves content with an ordered reference/run walk, #4750); previously trivial (DOCX comment-ID save lookups); previously trivial (built-in heading styles have their outline level without `w:outlineLvl`, #4696); previously trivial (DOCX comment ranges inside footnotes and endnotes are kept on read, #4548); previously trivial (RTF import and export keep Windows and Enhanced Metafile pictures (`\wmetafile`, `\emfblip`), #4259); previously trivial (#4658 bounds nested Markdown reference-label work); previously trivial (HTML import keeps preformatted lines with CR or Line truncated
+> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-11-01 · **Change:** trivial (ODT fidelity re-estimated at ~85%); previously trivial (ODT custom document properties and user fields as DOCPROPERTY); previously trivial (ODT connectors read and written glued); previously trivial (ODT borders around text read and written); previously trivial (ODT index marks read and written as XE fields; an index held around its entries updates); previously trivial (ODT ruby read and written); previously trivial (ODT page breaks after a paragraph, kept lines, widow control, hyphenation, table alignment and width and row heights); previously trivial (in-line drawings raised or lowered by their run's position; ODT in-line frames keep their place on the baseline; leading's space after the last line; text box borders shown by LibreOffice); previously trivial (ODT form controls opened and saved as content controls); previously trivial (password-protected ODT opened and saved); previously trivial (ODT headers and footers keep their shapes, text boxes, charts and embedded objects on save); previously trivial (ODT embedded spreadsheets and OLE objects kept whole instead of lost; flat ODT sub-documents valid `office:document`s); previously trivial (ODT charts in drawing groups drawn on open); previously trivial (ODT charts opened and saved as editable charts; flat ODT sub-documents no longer end the body); previously trivial (ODT leading read as an at-least spacing); previously trivial (ODT tracked formatting changes; changed regions named by `xml:id`); previously trivial (ODT drop caps; tab stops no longer drop a paragraph's background); previously trivial (flat ODT `.fodt` opened and saved; ODT fidelity re-estimated at ~80%); previously trivial (ODT page settings; a footnote no longer takes a footer's text); previously trivial (ODT dates in their formats, sequences, chapters and references); previously trivial (ODT bookmarks over text); previously trivial (ODT tables of contents and indexes; ODT fidelity re-estimated); previously trivial (ODT polygons, polylines and paths); previously trivial (ODT arrowheads, dashes and gradients); previously trivial (ODT groups of shapes and pictures); previously trivial (ODT rotated and mirrored shapes and pictures); previously trivial (ODT drawing shapes read and written); previously trivial (ODT text box frames keep their line, fill, padding and fit); previously trivial (ODT Asian and complex-script fonts); previously trivial (ODT right-to-left paragraphs); previously trivial (ODT text boxes kept); previously trivial (ODT unnumbered headings detached from the outline); previously trivial (ODT contextual spacing and layout settings); previously trivial (ODT custom character styles kept); previously trivial (ODT list level positions); previously trivial (ODT custom paragraph styles kept); previously trivial (ODT equations written as formula objects); previously trivial (ODT numbered headings written as headings); previously trivial (ODT floating pictures); previously trivial (ODT paragraph borders and background); previously trivial (ODT heading numbering); previously trivial (ODT font-face names); previously trivial (ODT table cell borders and padding); previously trivial (ODT heading, title, quote and preformatted styles keep their look); previously trivial (ODT tab stops read and written); previously trivial (ODT character formatting read and written); previously trivial (ODT lists keep their number formats, bullets and identity); previously trivial (ODT comments read and written); previously trivial (ODT footnotes and endnotes read and written); previously trivial (ODT headers, footers and text fields written; fields read); previously trivial (ODT paragraph spacing, indents and line spacing read and written); previously trivial (a paragraph naming an undefined style is formatted as Normal, as in Word, #5077); previously trivial (a hyperlinked TOC writes its page numbers as `PAGEREF _Toc… \h` fields, as Word does, #5097); previously trivial (HTML import ends the empty comments <!--> and <!---> at once, #5040); previously trivial (chart and SmartArt text the font lacks is drawn in a fallback face, so Chinese labels no longer show boxes, #4720); previously trivial (bibliography sources keep a corporate author (`b:Corporate`): read, written, cited and listed whole, #4848); previously trivial (custom-property bookmark-link preservation, #4767); previously trivial (note conversion preserves content with an ordered reference/run walk, #4750); previously trivial (DOCX comment-ID save lookups); previously trivial (built-in heading styles have their outline level without `w:outlineLvl`, #4696); previously trivial (DOCX comment ranges inside footnotes and endnotes are kept on read, #4548); previously trivial (RTF import and export keep Windows and Enhanced Metafile pictures (`\wmetafile`, `\emfblip`), #4259); previously trivial (#4658 bounds nested Markdown reference-label work); previously tLine truncated
 
 Every format Word opens or saves, what WordCraft does with it, and how it's tested. Fidelity is the
 share of a typical real-world file's content and formatting that survives (read: shows correctly;
@@ -57,7 +57,7 @@ Weights are the share of a Word user's file traffic (estimate). Read/write: ✅
 | PDF export | 8% | W | — | ✅ | ~80% | 6–10 | `crates/pdf/src/tests.rs` | krilla: embedded subsets, selectable text incl. field results (#133); Hebrew and Arabic copy and search as whole words (right-to-left glyphs written in visual order, #1383, also with fonts that draw lam-alef as two glyphs at one x, #2310); All Caps and Small Caps text extracts as the capitals shown, as from Word's PDFs, and never changes the case of other text (#1473), links, outline, tagging. Outline destinations follow leading page breaks to the heading text. Fonts it can't subset become outlines (#132). Print Markup (#589): comments in balloons beside each page (scaled to its paper) and tracked changes; HTML/Markdown/text copies end with a comment list. Horizontal and vertical lines inside groups are drawn (#1474). No PDF/A option, no "best for printing/online" choice |
 | PDF open (PDF Reflow, Word for Windows) | 1% | R | ❌ | — | 0% | 30–50 | — | Converting a PDF into an editable document. A sibling app (PdfCraft) may supply the parser |
 | `.rtf` Rich Text Format | 3% | R/W | 🟡 | 🟡 | ~50% | 10–15 | `crates/formats/src/tests.rs` | ~1,500 lines: text, character/paragraph formatting, styles, lists, tables, pictures (`\shppict`, #154; Windows and Enhanced Metafiles, `\wmetafile` and `\emfblip`, read and written, #4259), fields, bookmarks. 8-bit text in the document's code page (`\ansicpg`) or the current font's (`\fcharset`, `\cpg`): Cyrillic, Central European, Greek, Turkish, Hebrew, Arabic, Baltic, Vietnamese, Thai (was Windows-1252 only), Mac OS Roman (`\mac`, `\fcharset77`) and DOS code pages (`\pc` 437, `\pca` 850, `\cpg` 437/737/850/852/857/866, `\fcharset254`) (#1653). East Asian multibyte code pages decoded as runs: 932 Shift-JIS (`\fcharset128`, Japanese), 936 GBK (134, Simplified Chinese), 949 UHC/windows-949 (129, Korean) and 950 Big5 (136, Traditional Chinese) through `\ansicpg`, `\cpg` or the font's charset, escaped or raw, a lead byte and its trail byte together; invalid sequences read as U+FFFD, and a run that starts `EF BB BF` is text, not a BOM (#1653). Pasted from the system clipboard where the platform offers it (Windows, Wayland) when there is no HTML (#687). Tracked insertions and deletions read and written (`\revtbl`, `\revised`/`\deleted`, authors, `\revdttm` dates), so Accept/Reject All work after opening or a round trip; tracked paragraph marks (`\par` inside `\revised`/`\deleted` groups, including a `\sect` inside a deletion) and character and paragraph formatting revisions (`\crauth`/`\crdate` with `\oldcprops`, `\prauth`/`\prdate` with `\oldpprops`) read and written; section and table formatting revisions (`\oldsprops`, `\oldtprops`) not yet. Sections on import (#1378): each `\sect` ends a section with its own page size and orientation, margins, header/footer distance, columns, break type, page-number restart, start and format, title page and headers/footers (those it leaves out link to the previous); export writes every section too (break type, page size and orientation, margins, header/footer distance, columns, page numbering, title page; not headers/footers). Thin: comments, notes, RTL |
-| `.odt` OpenDocument Text (and flat `.fodt`) | 2% | R/W | 🟡 | 🟡 | ~82% | 30–50 | `crates/formats/src/tests.rs`, `crates/formats/src/odt/tests.rs` and one file per feature in `crates/formats/src/odt/tests_more/`, `crates/engine/tests/it/odt_sections.rs`, `odt_toc.rs`, `odt_fields.rs`, `odt_charts.rs`, `odt_objects.rs`, `odt_password.rs`, `odt_forms.rs`; checked against LibreOffice's own documents (round trips compared page by page) and the ODF 1.3 schema | Ruby (`text:ruby`, §6.4: a base text with ruby text over it) is read as WordCraft's Phonetic Guide and written back as ODF ruby above its base, centred (one inside a tracked change is written as its base text, which the change marks); its own position and alignment aren't kept. A border around text (LibreOffice's `loext:border` or its sides, with `loext:padding`: ODF 1.3 has no attribute for it) is Word's text border, one line all round, and is written back so (a document with one is then extended ODF, not strict). Emphasis marks (`style:text-emphasize`) and rotated text (`style:text-rotation-angle`) aren't read. How text flows: a page break after a paragraph (`fo:break-after`, a page break before the next paragraph as Word has it), lines kept together (`fo:keep-together`), widow and orphan control (`fo:widows`/`fo:orphans`: on with any line count, off with none; the counts themselves aren't kept) and hyphenation (`fo:hyphenate`, a paragraph's in ODF and the document's in WordCraft: a document with a hyphenated paragraph hyphenates, its other paragraphs opting out) are read and written; a table's alignment and width (`table:align`, `style:rel-width`, or `style:width` for an aligned table) and its rows' heights (`style:row-height` exact, `style:min-row-height` at least) are read and written. Form controls (`office:forms` controls placed by `draw:control`, ODF 1.3 §13) open as content controls — text fields and text areas as plain text controls, check boxes as check boxes, radio buttons as check boxes with round symbols, list boxes as drop-down lists, combo boxes as combo boxes, date fields as date controls, each with its value, entries and selection, its name as the control's tag and a label as its title — and content controls of those kinds in the body are written back as form controls LibreOffice shows with their values (in headers and footers, as their text); buttons, images, hidden and other controls aren't read, and a control's size and look aren't kept. Password-protected ODT (ODF 1.3 Part 2 §3.4) opens with its password — AES-256-CBC with a SHA-256 or SHA-1 start key and PBKDF2, as LibreOffice writes it; the old Blowfish encryption is refused with a message saying so — and a document opened with a password, or saved with one (Save with password), is written encrypted the way LibreOffice encrypts (every file but the `mimetype` and manifest; each with its own salt and initialisation vector; SHA-256 checksums), which LibreOffice opens with the password. Flat OpenDocument text (`.fodt`: the whole document in one `office:document`, pictures inline as base64 `office:binary-data`, formulas inline) is opened and saved as a package is, both validating against the schema. Tables of contents and other indexes (`text:table-of-content`, `text:illustration-index`/`text:table-index`, `text:alphabetical-index`, `text:bibliography`) open as Word's `TOC` (levels from the source's `text:outline-level`; `\c` with the caption name for a table of figures), `INDEX` and `BIBLIOGRAPHY` fields — in the title paragraph when the index has one, as WordCraft inserts a table, else around the entries — so References › Update Table regenerates them; LibreOffice's Contents 1–10, Contents Heading and Figure Index 1 styles are WordCraft's TOC 1–9, TOC Heading and Table of Figures; WordCraft's tables are written back as ODF indexes with their source and entry templates (LibreOffice updates them), entries' links in the Index Link style; user and object indexes are read as their paragraphs; index marks are Word's `XE` fields — a mark at a point (`text:alphabetical-index-mark`, its `text:key1`/`text:key2` the levels above its entry) and one over text (`-mark-start`…`-mark-end` in one paragraph, its entry the marked text) — and `XE` fields are written as point marks, so References › Update Index rebuilds an ODT index from its entries (an index or other generated list held as a field around its entries, as ODT and Word files hold it, is first made the field's own paragraph, as WordCraft inserts one). Custom character styles (a common text style other than LibreOffice's link, note-mark and list-label styles kept as a character style with its name, parent and own formatting, its text in it; written back as common text styles), custom paragraph styles (a common style other than Standard, the kinds' and the note texts' kept as a document style with its name, parent and own formatting, its paragraphs in it rather than given its formatting directly; written bLine truncated
+| `.odt` OpenDocument Text (and flat `.fodt`) | 2% | R/W | 🟡 | 🟡 | ~85% | 30–50 | `crates/formats/src/tests.rs`, `crates/formats/src/odt/tests.rs` and one file per feature in `crates/formats/src/odt/tests_more/`, `crates/engine/tests/it/odt_sections.rs`, `odt_toc.rs`, `odt_fields.rs`, `odt_charts.rs`, `odt_objects.rs`, `odt_password.rs`, `odt_forms.rs`; checked against LibreOffice's own documents (round trips compared page by page) and the ODF 1.3 schema | Ruby (`text:ruby`, §6.4: a base text with ruby text over it) is read as WordCraft's Phonetic Guide and written back as ODF ruby above its base, centred (one inside a tracked change is written as its base text, which the change marks); its own position and alignment aren't kept. A border around text (LibreOffice's `loext:border` or its sides, with `loext:padding`: ODF 1.3 has no attribute for it) is Word's text border, one line all round, and is written back so (a document with one is then extended ODF, not strict). Emphasis marks (`style:text-emphasize`) and rotated text (`style:text-rotation-angle`) aren't read. How text flows: a page break after a paragraph (`fo:break-after`, a page break before the next paragraph as Word has it), lines kept together (`fo:keep-together`), widow and orphan control (`fo:widows`/`fo:orphans`: on with any line count, off with none; the counts themselves aren't kept) and hyphenation (`fo:hyphenate`, a paragraph's in ODF and the document's in WordCraft: a document with a hyphenated paragraph hyphenates, its other paragraphs opting out) are read and written; a table's alignment and width (`table:align`, `style:rel-width`, or `style:width` for an aligned table) and its rows' heights (`style:row-height` exact, `style:min-row-height` at least) are read and written. Form controls (`office:forms` controls placed by `draw:control`, ODF 1.3 §13) open as content controls — text fields and text areas as plain text controls, check boxes as check boxes, radio buttons as check boxes with round symbols, list boxes as drop-down lists, combo boxes as combo boxes, date fields as date controls, each with its value, entries and selection, its name as the control's tag and a label as its title — and content controls of those kinds in the body are written back as form controls LibreOffice shows with their values (in headers and footers, as their text); buttons, images, hidden and other controls aren't read, and a control's size and look aren't kept. Password-protected ODT (ODF 1.3 Part 2 §3.4) opens with its password — AES-256-CBC with a SHA-256 or SHA-1 start key and PBKDF2, as LibreOffice writes it; the old Blowfish encryption is refused with a message saying so — and a document opened with a password, or saved with one (Save with password), is written encrypted the way LibreOffice encrypts (every file but the `mimetype` and manifest; each with its own salt and initialisation vector; SHA-256 checksums), which LibreOffice opens with the password. Flat OpenDocument text (`.fodt`: the whole document in one `office:document`, pictures inline as base64 `office:binary-data`, formulas inline) is opened and saved as a package is, both validating against the schema. Tables of contents and other indexes (`text:table-of-content`, `text:illustration-index`/`text:table-index`, `text:alphabetical-index`, `text:bibliography`) open as Word's `TOC` (levels from the source's `text:outline-level`; `\c` with the caption name for a table of figures), `INDEX` and `BIBLIOGRAPHY` fields — in the title paragraph when the index has one, as WordCraft inserts a table, else around the entries — so References › Update Table regenerates them; LibreOffice's Contents 1–10, Contents Heading and Figure Index 1 styles are WordCraft's TOC 1–9, TOC Heading and Table of Figures; WordCraft's tables are written back as ODF indexes with their source and entry templates (LibreOffice updates them), entries' links in the Index Link style; user and object indexes are read as their paragraphs; index marks are Word's `XE` fields — a mark at a point (`text:alphabetical-index-mark`, its `text:key1`/`text:key2` the levels above its entry) and one over text (`-mark-start`…`-mark-end` in one paragraph, its entry the marked text) — and `XE` fields are written as point marks, so References › Update Index rebuilds an ODT index from its entries (an index or other generated list held as a field around its entries, as ODT and Word files hold it, is first made the field's own paragraph, as WordCraft inserts one). Custom character styles (a common text style other than LibreOffice's link, note-mark and list-label styles kept as a character style with its name, parent and own formatting, its text in it; written back as common text styles), custom paragraph styles (a common style other than Standard, the kinds' and the note texts' kept as a document style with its name, parent and own formatting, its paragraphs in it rather than given its formatting directly; written bLine truncated
 | `.txt` Plain text | 2% | R/W | ✅ | ✅ | ~95% | 1–2 | unit tests | Encoding detection. Files with other extensions (`.m3u`/`.m3u8` playlists, logs, config files, no extension) open as text when they are text, Word and RTF files by their signature; binary files are refused (#569). A Word or RTF extension that contradicts the content also opens by signature, as in Word: RTF saved as `.doc` (hh.ru résumés, accounting exports), a `.docx` renamed `.doc`, a Word 97-2003 file renamed `.docx`; a Word XML Document (Word 2003 XML or Flat OPC) or a web page (`<html>`, `<!DOCTYPE html>`) under a `.doc`, `.docx` or `.rtf` name opens as what it is (#2853, `tests::word_xml_and_web_pages_saved_as_doc_open_by_content`). Word's encoding choice dialog and line-ending options missing; such files save only through Save As |
 | `.htm/.html` Web Page and Web Page, Filtered | 1% | R/W | 🟡 | 🟡 | ~60% | 6–10 | `crates/formats/src/tests.rs` | Tables (#102), relative pictures embedded (#113), missing `</head>` tolerated (#154); the empty comments `<!-->` and `<!--->` end at once instead of swallowing the rest of the page (#5040). Header cells (`<th>`) bold unless their CSS says otherwise; `text-align` on a cell, or inherited from its row, row group or table, aligns the cell's paragraphs (#1381). HTML gives no page size, so it opens on the region's paper (A4 or Letter), as Markdown and plain text do; `@page` isn't read (#1381). No Word "Web Page" (with `_files` folder) round-trip. The same reader takes HTML from the system clipboard: Paste keeps another program's formatting (a Word document, a web page; Windows' "HTML Format" header understood), Merge Formatting keeps its emphasis (#687). A pasted `<blockquote>` (LibreOffice's paragraph indented on both sides) becomes a Normal paragraph indented by the page's `blockquote` margins, else 0.5 in each side; opening an .html file keeps it as the Quote style (#1270). Equations are written as MathML (with the linear format as a UnicodeMath annotation) and read back from MathML: our annotation, else the presentation elements, else a TeX annotation (#816). A copy of one equation alone also goes in the clipboard's MathML formats (Windows "MathML" and "MathML Presentation", macOS `public.mathml.presentation` and `public.mathml`; W3C MathML 3 §6.2.4), which Microsoft documents Word reading first when it pastes math (#1297; the paste into Word is not yet verified); Ruby (furigana, phonetic guides) is written as `<ruby>base<rt>reading</rt></ruby>` in the base text's formatting and read back from `<ruby>`/`<rb>`/`<rt>` (`<rp>` fallback parentheses dropped; malformed markup keeps its text), so docx/doc → HTML → doc keeps the annotation; HTML states no alignment, size or raise, so the Phonetic Guide's defaults apply (#1681)  CRLF and lone CR input newlines normalize before tokenization, preserving preformatted lines and leaving decoded character references separate (#4810). |
 | `.mht/.mhtml` Single File Web Page | <1% | R/W | ❌ | ❌ | 0% | 3–5 | — | |
@@ -279,6 +279,7 @@ Custom document properties retain their bookmark link targets through DOCX saves
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-01 | trivial | ODT fidelity re-estimated at ~85% (was ~82%): flow breaks, table placement, ruby, index marks, text borders, connectors and custom properties landed; a 20,000-paragraph document round-trips in about a second with nothing lost; 400 fuzzed documents opened without a crash. Left: emphasis marks (no WordCraft model), rotated text, variables as fields, captions and measures, control sizes, embedded spreadsheets' contents, chart fonts |
 | 2026-11-01 | trivial | ODT: custom document properties (`meta:user-defined`) and user fields were dropped or left as text; they are WordCraft's custom properties, the fields showing them `DOCPROPERTY` fields that update, all written back (a user field as a property) (`odt::tests_more::fields::custom_properties_and_user_fields_are_docproperty_fields`, `odt_fields.rs::a_user_field_updates_from_its_property`) |
 | 2026-11-01 | trivial | ODT: connectors (`draw:connector`) were left out; they open as WordCraft connectors glued to their shapes' connection sites and placed between them, and are written back glued, which LibreOffice re-routes (`odt::tests_more::connectors`) |
 | 2026-11-01 | trivial | ODT: a border around text (LibreOffice's `loext:border`) is read as Word's text border and written back, which LibreOffice draws (`odt::tests_more::chars::a_border_around_text_is_read_and_written`) |

docs/gaps.md

@@ -81,7 +81,7 @@ Text context menus now include the existing formatting mini toolbar (#2959), inc
 | 15 | **References depth**: no EndNote/Mendeley desktop integration (bibliography sources are saved in DOCX, #790; Zotero landed, #189; Word's own `Sources.xml` master list imports into Manage Sources, #2640) | | #790 stores sources in `customXml` and reads them back; `crates/zotero`; `references.sources` `import` reads a Word bibliography file (`b:Sources`) | Students and researchers | 3–6 | [target-app-parity.md](target-app-parity.md) |
 | 16 | **Right-to-left completeness**: kashida, RTL in HTML/ODT/RTF; six still-open older RTL bug reports to re-verify after #207 (#211, #199, #66, #63, #48, #19; #215 is closed). RTL tables and sections landed (#362); PDF export's Hebrew and Arabic text copies and searches as whole words (#1383) | | [layout-parity.md](layout-parity.md) | Arabic, Persian, Hebrew writers | 7–11 | [layout-parity.md](layout-parity.md) |
 | 17 | **East Asian typography**: hint-reliant DFKai-SB contours repaired (local Windows regression; no readiness estimate change); Asian Typography options (Phonetic Guide landed, #288; Enclose Characters landed, #297; document grid landed, #391; vertical text landed, #491) | | `para.asianTypography` is live (Paragraph dialog Asian Typography tab, #323), automatic Asian/Latin and Asian/number spacing is laid out (#2358), and no East Asian item is left in the catalog's missing list; the remaining depth is not measured | Chinese, Japanese and Korean documents | 11–19 | [layout-parity.md](layout-parity.md) |
-| 19 | **RTF and ODT depth**: notes, comments, revisions (RTF and ODT insertions and deletions done; RTF paragraph-mark and character/paragraph formatting revisions done; ODT formatting revisions done; RTF section/table revisions left), sections (RTF and ODT import and export done, #1378, #1379), RTL. ODT is read and written nearly whole (~82%, see [file-format-parity.md](file-format-parity.md)): sections, headers and footers, page setup, styles (named paragraph and character styles), character and paragraph formatting, lists and heading numbering, tab stops, tables (borders, padding, alignment, width, row heights, header rows), notes, comments, tracked changes, fields (dates, sequences, chapters, references, index marks), bookmarks, tables of contents and indexes, pictures, text boxes, shapes, groups, rotation, strokes and gradients, equations, charts, embedded objects kept whole, form controls, ruby, drop caps, password protection, flat `.fodt`; checked against LibreOffice by round trips compared page by page and the ODF 1.3 schema. Left in ODT: emphasis marks, rotated text, conditional and variable fields as fields (user fields and custom properties done), control sizes, drawing embedded spreadsheets' contents; RTF export writes every section (`\sect`, `\sectd`); RTF reads and writes WMF and EMF pictures (#4259) | | ~2,100 (RTF) and ~11,000 (ODT, plus ~7,000 of tests) lines in `crates/formats`; RTF code pages (#896) and page setup (#902) landed; open PRs: RTF notes and comments (#1056) | Users exchanging with LibreOffice or older tools | 10–16 | [file-format-parity.md](file-format-parity.md) |
+| 19 | **RTF and ODT depth**: notes, comments, revisions (RTF and ODT insertions and deletions done; RTF paragraph-mark and character/paragraph formatting revisions done; ODT formatting revisions done; RTF section/table revisions left), sections (RTF and ODT import and export done, #1378, #1379), RTL. ODT is read and written nearly whole (~85%, see [file-format-parity.md](file-format-parity.md)): sections, headers and footers, page setup, styles (named paragraph and character styles), character and paragraph formatting, lists and heading numbering, tab stops, tables (borders, padding, alignment, width, row heights, header rows), notes, comments, tracked changes, fields (dates, sequences, chapters, references, index marks), bookmarks, tables of contents and indexes, pictures, text boxes, shapes, groups, rotation, strokes and gradients, equations, charts, embedded objects kept whole, form controls, ruby, drop caps, password protection, flat `.fodt`; checked against LibreOffice by round trips compared page by page and the ODF 1.3 schema. Left in ODT: emphasis marks, rotated text, conditional and variable fields as fields (user fields and custom properties done), control sizes, drawing embedded spreadsheets' contents; RTF export writes every section (`\sect`, `\sectd`); RTF reads and writes WMF and EMF pictures (#4259) | | ~2,100 (RTF) and ~11,000 (ODT, plus ~7,000 of tests) lines in `crates/formats`; RTF code pages (#896) and page setup (#902) landed; open PRs: RTF notes and comments (#1056) | Users exchanging with LibreOffice or older tools | 10–16 | [file-format-parity.md](file-format-parity.md) |
 | 18 | **Screen-reader access** to the document canvas: exposed, not yet tried with real screen readers | | The canvas describes paragraphs, headings, lists, tables, links, pictures and the caret to AccessKit (#488), tested headlessly; the ribbon's font name and size boxes, and the dropdown arrows beside them, say what they are (#3172); Windows Magnifier follows the caret, onto a new line too (#1119); no NVDA, VoiceOver or Orca run yet | Blind and low-vision users; public-sector procurement | 3–6 | [ui-parity.md](ui-parity.md) |
 | 20 | **Performance on large real-world documents** unmeasured (500+ pages, many pictures) | | DOCX comment saves avoid repeated paragraph-ID and durable-ID reservation searches; large threaded-comment fixtures retain metadata through save/reopen. Only the 188-page sample benchmark; scrolling a 1,096-page one-table document went from ~600 ms to ~2–5 ms a frame (#811), but opening it still lays out for seconds; opening a document with pictures no longer copies them (92 MB with 20 pictures: about 90 MB less); opening a document with many relationships now costs the size of its part and not that size times the number of relationships (1024 relationships and a 64 MiB part: 224 s → 0.2 s, #3411); a word with no break opportunity in it no longer lays out quadratically (1 MiB: 29.4 s → 0.35 s, #3412); saving a document with many content controls now costs the time the controls take (32,000 controls: 3.6 s → 0.1 s, #13) | Thesis and book authors | 10–20 | [layout-parity.md](layout-parity.md) |
 | 21 | **Mail merge data sources**: no Outlook/Contacts, Access or database sources, no email merge; CSV, typed lists (#247) and Excel/OpenDocument spreadsheets (#334, legacy .xls #778) only | | Select Recipients reads .csv/.tsv/.txt in any common encoding (UTF-8/16, GBK, Big5, Shift_JIS…), .xlsx/.xlsm, .xls and .ods; Edit Recipient List filters and sorts (#778), finds records and can show only the merged ones (#1576) | Office administrators | 4–8 | [target-app-parity.md](target-app-parity.md) |