+ PowerPoint stores information about the fonts used in FontEntityAtoms, + which live inside Document.Environment.FontCollection. For every different + font used, a FontEntityAtom must exist for that font. There is always at + least one FontEntityAtom in Document.Environment.FontCollection, + which describes the default font. +
++ The instance field of the record header contains the zero based index of the + font. Font index entries in StyleTextPropAtoms will refer to their required + font via this index. +
++ The length of FontEntityAtoms is always 68 bytes. The first 64 bytes of + it hold the typeface name of the font to be used. This is stored as + a null-terminated string, and encoded as little endian unicode. (The + length of the string must not exceed 32 characters including the null + termination, so the typeface name cannot exceed 31 characters). +
+ ++ After the typeface name there are 4 bytes of bitmask flags. The details of these + can be found in the Windows API, under the LOGFONT structure. + The 65th byte is the output precision, which defines how closely the system chosen + font must match the requested font, in terms of heigh, width, pitch etc. + The 66th byte is the clipping precision, which defines how to clip characters + that occur partly outside the clipping region. + The 67th byte is the output quality, which defines how closely the system + must match the logical font's attributes to those of the physical font used. + The 68th (and final) byte is the pitch and family, which is used by the + system when matching fonts. +
+