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81bf9187f2
A display equation wider than its column ran off the page. It now breaks at top-level binary operators and relations (never inside a fraction, radical, script or matrix), filling each line greedily; a term wider than the line overflows instead of breaking inside. - Break before the operator by default, or after it, or repeated on both lines, as the document's m:brkBin says; m:brkBinSub picks how a minus repeats. - Continuation lines are indented by m:wrapIndent (one inch by default) or set flush right with m:wrapRight. - Manual breaks (m:brk on a run) start a new line; m:alnAt aligns it at an operator of the first line. - DOCX: m:mathPr in settings.xml and m:brk in math runs are read and written back. Documents without them save as before. - Inline equations, numbered equations and m:jc alignment are unchanged. Tests: layout (a long sum wraps within the column with indented continuation lines; after/repeat modes; manual breaks and alnAt; short equations stay on one line; hostile break input) and DOCX round-trip. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>