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| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="aat-shaping"></a>AAT shaping</h2></div></div></div> |
| <p> |
| In contrast to OpenType shaping, AAT shaping does not specify a |
| predefined set of shaping models or a set of supported scripts. |
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| Instead, each AAT font includes a complete set of rules that |
| implement the desired shaping model for the intended |
| script. These rules include finite-state machines to match glyph |
| sequences and the shaping operations to perform. |
| </p> |
| <p> |
| Notably, AAT shaping rules are expressed for glyphs in the font, |
| not for Unicode codepoints. AAT shaping can perform the same |
| shaping operations used in OpenType shaping, as well as other |
| functions that have not been defined for OpenType shaping. |
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