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Mac OS 8 and 9 Developer Documentation > Text and Other International Services > Apple Type Services for Unicode Imaging (ATSUI) > Apple Type Services for Unicode Imaging Reference

     

About Apple Advanced Typography

While ATSUI enables advanced high-quality typography and expanded Unicode-based multilingual line layout, Apple Advanced Typography (AAT) provides advanced layout support. There are two header files associated with Apple Advanced Typography: SFNTTypes.h and SFNTLayoutTypes.h. Both files define constants and data types necessary to access the font tables of an 'SFNT' font. These tables pertain to text rendering as well as layout. This information can be useful for font designers, as well as for developers wishing to access font table information. You can pass some of these constants and types to ATSUI functions that search a font name table for information. In addition, there are several ATSUI functions that pass back a subset of the font feature type and selector constants described in this section.


© 2000 Apple Computer, Inc. – (Last Updated 25 Jan 00)