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Chapter 5. Text > Composite Fonts

5.6. Composite Fonts

A composite font, also called a Type 0 font, is one whose glyphs are obtained from a fontlike object called a CIDFont. A composite font is represented by a font dictionary whose Subtype value is Type0. The Type 0 font is known as the root font, and its associated CIDFont is called its descendant.

Note

Composite fonts in PDF are analogous to composite fonts in PostScript but with some limitations. In particular, PDF requires that the character encoding be defined by a CMap (described below), which is only one of several encoding methods available in PostScript.Also, PostScript allows a Type 0 font to have multiple descendants, which might also be Type 0 fonts. PDF supports only a single descendant, which must be a CIDFont.



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