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<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.
    </p>
<p>
      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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