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| <div class="section"> |
| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="opentype-shaping-models"></a>OpenType shaping models</h2></div></div></div> |
| <p> |
| OpenType provides shaping models for the following scripts: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>default</em></span> shaping model handles all |
| non-complex scripts, and may also be used as a fallback for |
| handling unrecognized scripts. |
| </p></li> |
| <li class="listitem"> |
| <p> |
| The <span class="emphasis"><em>Indic</em></span> shaping model handles the Indic |
| scripts Bengali, Devanagari, Gujarati, Gurmukhi, Kannada, |
| Malayalam, Oriya, Tamil, Telugu, and Sinhala. |
| </p> |
| <p> |
| The Indic shaping model was revised significantly in |
| 2005. To denote the change, a new set of <span class="emphasis"><em>script |
| tags</em></span> was assigned for Bengali, Devanagari, |
| Gujarati, Gurmukhi, Kannada, Malayalam, Oriya, Tamil, and |
| Telugu. For the sake of clarity, the term "Indic2" is |
| sometimes used to refer to the current, revised shaping |
| model. |
| </p> |
| </li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Arabic</em></span> shaping model supports |
| Arabic, Mongolian, N'Ko, Syriac, and several other connected |
| or cursive scripts. |
| </p></li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Thai/Lao</em></span> shaping model supports |
| the Thai and Lao scripts. |
| </p></li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Khmer</em></span> shaping model supports the |
| Khmer script. |
| </p></li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Myanmar</em></span> shaping model supports the |
| Myanmar (or Burmese) script. |
| </p></li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Tibetan</em></span> shaping model supports the |
| Tibetan script. |
| </p></li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Hangul</em></span> shaping model supports the |
| Hangul script. |
| </p></li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Hebrew</em></span> shaping model supports the |
| Hebrew script. |
| </p></li> |
| <li class="listitem"><p> |
| The <span class="emphasis"><em>Universal Shaping Engine</em></span> (USE) |
| shaping model supports complex scripts not covered by one of |
| the above, script-specific shaping models, including |
| Javanese, Balinese, Buginese, Batak, Chakma, Lepcha, Modi, |
| Phags-pa, Tagalog, Siddham, Sundanese, Tai Le, Tai Tham, Tai |
| Viet, and many others. |
| </p></li> |
| <li class="listitem"><p> |
| Text runs that do not fall under one of the above shaping |
| models may still require processing by a shaping engine. Of |
| particular note is <span class="emphasis"><em>Emoji</em></span> shaping, which |
| may involve variation-selector sequences and glyph |
| substitution. Emoji shaping is handled by the default |
| shaping model. |
| </p></li> |
| </ul></div> |
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