Format Crates

Each format has its own crate that only depends on s1-model.

DOCX (s1-format-docx)

Reads and writes Office Open XML (ECMA-376):

• Paragraph/run formatting, styles, lists
• Tables (including nested), images, hyperlinks
• Headers/footers, comments, footnotes/endnotes
• Track changes, bookmarks, section properties
• Media deduplication by content hash

ODT (s1-format-odt)

Reads and writes Open Document Format (ODF 1.2):

• Full formatting parity with DOCX
• Automatic styles → node attributes mapping
• Table column parsing with repeat support
• TOC source attributes preserved

PDF (s1-format-pdf)

Export only (via pdf-writer):

• Font embedding with subsetting
• Proper ToUnicode CMap for text extraction
• JPEG passthrough, PNG decode
• Page layout from s1-layout

TXT & Markdown (s1-format-txt, s1-format-md)

• Plain text: paragraph-per-line
• Markdown: GFM tables, headings, lists, images, code blocks