- The em box top that Top-to-Top Leading asks of every glyph's line metrics parsed the font's
cmap and vertical metrics per glyph on every layout: each face now reads it once.
- The Paragraph panel menu shows Top-to-Top / Bottom-to-Bottom Leading with the East Asian
options (Preferences › Type), as the Mojikumi Set does, and Reset Panel goes back to
Bottom-to-Bottom Leading, the default.
- Saved as `leading_model`, like the other paragraph attributes in files.
- Simplified Chinese (landed since) translates the two menu items.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>