But it is actually pretty easy to switch to Chicago in the library -- apart from the clone you mention, there is also a 'plain' TTF version of the original Chicago floating around...
t. satisfied Nu Sans shareware buyer http://www.scootergraphics.com/nusans/ :)
One benefit to having the Newton Connection Utilities and Toolkit installed is that beautiful font.
https://www.oreilly.com/api/v2/epubs/0201700042/files/020170...
or similar.
Last (big) pass was the text editor, which isn't totally finished and polished but I had to release something for the deadline ;-)
You can also get the "real" TrueType Chicago font (designed by Bigelow & Holmes) via a System 7.6.1 download, then convert the TTF to OTF with FontForge's command line tool. https://www.macintoshrepository.org/1682-mac-os-7-6-x
fontforge -script -c 'Open($1); Generate($2);' input_font.ttf output_font.otfThe arguably bigger reason is that Mac OS didn't support "data fork TrueType fonts" (what most people probably think of when they think "TTF file") until Mac OS 8.5 (1998). Before then, TrueType and other fonts on the Macintosh were resource-fork-only, because "installing" a font prior to 1992 meant using a special Font Mover utility which actually grafted the font's resource data into the Macintosh System suitcase itself at an unused Resource ID#. Attempting to even copy such a font to a Windows system would yield a 0-byte file on the receiving end unless one knew what they were doing. System 7.1 (1992) added a dynamic "Fonts" folder in the System Folder but still expected to see them as Macintosh resources.
An Apple-commissioned font like Chicago probably never had an official data-fork-plus-OS/2-table "Windows Version" made of them at all. Since the actual Bézier curve data (`glyf` table) was the same on either platform, it was possible to homebrew a Windows version of a Macintosh font or Macintosh version of a Windows font.