The fonts that I am editing have three platform: Macintosh, Microsoft Unicode, and Unicode 1.0 Semantics.
The help file says I should keep the first since many programs use it, but can I delete the Unicode 1.0 Semantics platform? It would save me a lot of work. Which programs need it?
OK nobody can answer my question, so I’ll try to answer it myself.
I installed a font with only Macintosh and Microsoft Unicode mappings. Extended characters were replaced with the default character box in OpenOffice 1.0. After I added the Unicode 1.0 Semantics mapping the font seems to work just fine, so I guess that OpenOffice requires Unicode 1.0 Semantics mappings.
Any more detailed information from someone who knows would be much appreciated.
Apple does not have a Unicode Encoding ID as Microsoft does. Therefore Mac computers rely on Platform ID 0 (Unicode) for doing Unicode fonts as the primary source for their cmap table.
Times New Roman includes mappings for the Unicode, Macintosh and Microsoft platform.