Equation paragraphs drew their stored linear text, control characters and all. They now lay
out from the parsed equation tree: scripts, fractions, radicals, n-ary operators with limits,
fences, accents, bars, boxes, matrices and equation arrays, in Cambria Math or STIX Two Math
on macOS, placed by glyph ink. The three native equation fixtures render with the structure
and placement OneNote 2010 gives them. The linear text remains the source the caret moves
through.

Assisted-by: claude-opus-5.5