Found by rendering 12 US government Word documents (NIH, EPA, MCC) in
Word for Windows and WordCraft and comparing the pages side by side,
then pinning each rule down with synthetic documents measured in Word.
- Kerning: the shaper kerned every run, so WordCraft's lines held more
text than Word's and broke differently. Word kerns only a run with
Kerning for fonts (w:kern) at or above that size; no w:kern and
w:kern="0" are unkerned. New documents keep kerning from 1 pt, like
Word's Normal template.
- Automatic paragraph spacing (w:beforeAutospacing/w:afterAutospacing,
common in text pasted from web pages) was ignored. It is 14 pt at
any size, none before the document's or a cell's first paragraph,
none after a cell's last, and the larger of two neighbouring spaces
counts. Read, written back, and settable through para.spacing
(beforeAuto/afterAuto); a number, Ctrl+0 and Remove Space After
replace it as in Word.
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
- Indents in characters (w:firstLineChars, w:hangingChars, w:leftChars,
w:rightChars; sprmPDxc* in .doc) are kept in the model, read and written,
and laid out in the paragraph mark's font size, winning over the points
as in Word. Indent commands cancel an inherited character indent.
- .doc: sprmPDxaLeft1 has a two-byte operand (was read as four, so every
first-line indent was lost); sprmPDxaLeft1_80 is read; LSPD line spacing
is decoded as signed dyaLine + fMultLinespace (exact 20pt read as 799pt,
a page per empty paragraph).
- A floating table placed on the page or margin that would cover the text
already on the page and doesn't fit below it moves to the next page.
- A line holding only a page break stays at the bottom of a full page
instead of leaving a blank page.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
