The optional cvt, fpgm and prep tables, as defined in True Type Font Files, typically appear in the Global TrueType Data Segments of hinted TrueType soft fonts, but should not appear in unhinted fonts.

IF (Intellifont Face Data) Reserved for future use.

PA (PANOSE Description) This data segment of variable length may be used for the purpose of font selection and substitution. Its definition continues to evolve. A 10-field (10-byte) version sufficient for the description of most Latin fonts appears under the OS/2 table in True Type Font Files.

PF (PS-Compatible Font Name) Reserved for future use.

XW (x-windows font name) This ASCII field contains standard X-Windows font names.

Checksum

The value of this byte, when added to the sum of all of the bytes from byte 64 of the descriptor through the Reserved byte, should equal 0 in modulo 256 arithmetic.

11-42Soft Font Creation

EN

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HP 5961-0509 manual Checksum, If Intellifont Face Data Reserved for future use, 11-42Soft Font Creation