mongolianVert was read as vert (and saved back as vert). PowerPoint turns it like vert but runs
its lines from left to right, the anchor mirrored with them (bottom-anchored text sits on the
right). It is now its own TextDir, kept on save; its lines' places are mirrored across the box.
wordArtVert (Stacked) was turned like vert. PowerPoint stands every character upright, one
under the other (Latin letters about one em apart, spaces their own width), with lines running
left to right. Stacked text now stands each character upright in an em of its own and mirrors
the line order.
Also: a bullet in the second or later column of a multi-column body is drawn on its line's
baseline (it kept the first column's).
w01-vertical s4 (mongolianVert) 11.54 -> 9.38, s5 (wordArtVert) 13.84 -> 13.56; w14-xml s13
6.78 -> 6.60.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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