@gferreira thanks a lot! I will look into it :)

For maximum flexibility each glyph has his own undo manager. You dont want to use a single undo manager for everything. I understand in this case a single cmd-Z should perform actions in multiple glyphs. A while ago Ive made dirty hack... let me see if I can clean it up.

Sometimes when a guideline is moved, the undo will not work. Also sometimes, the name is erased. I can reproduce with both local and global guides. Video Version 3.3 (build 1911061105)

then you dont need to call undo :) but you have to add undo items while editing. glyph = CurrentGlyph() # in RF 3.2 with glyph.undo("changed spacing"): glyph.leftMargin += 10 glyph.rightMargin += 10 this will 'record' the change, add an menu item. good luck!

the font.lib is also possible but then its hard to have the global undo manager focus. The current undo manager is connected to the current glyph. good luck!

mmm I see the problem is that its edits the blue zones, and when the font info has changed, RF will update tons of views and cells... I would store it temporarily in font.lib while editing (as you want to jump to different glyphs and see the same values). When not editing (dragging fe) write it back in the font.info.

Ok, convinced :-) It's a floating window now. Just pushed 1.1 to github: http://github.com/franzheidl/SidebearingsEQ