Final Draft for Windows uses only single-byte TrueType or OpenType fonts. Although other kinds of fonts may appear in the font list, only single-byte TrueType or OpenType fonts can work. TrueType fonts have a TT icon next to them; OpenType fonts have the two-color O icon.
Also, be aware that many foreign fonts, including some Asian fonts, are multi-byte fonts. Although they may be TrueType or OpenType fonts, they're not single-byte and they just won't work.
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