Microsoft Typography | Developer information | Specifications | OpenType font development
Thai OpenType Specification


Creating and supporting OpenType fonts for the Thai script

This document presents information that will assist font developers in creating fonts for all Thai script languages covered by the Unicode Standard 3.1. Thai script is used to write Thai as well as other Southeast Asian languages such as Pali and Sanskrit. Font developers will learn how to encode complex script features in their fonts, choose character sets, organize font information, and use existing tools to produce Thai fonts. Registered features of the Thai script are defined and illustrated, encodings are listed, and templates are included for compiling Thai layout tables for OpenType fonts.

This document also presents information about the Thai OpenType shaping engine of 'Uniscribe', an operating system component responsible for text layout.

In addition to being a primer and specification for the creation and support of Thai fonts, this document is intended to more broadly illustrate the OpenType Layout architecture, feature schemes, and operating system support for shaping and positioning text.


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Information in this document is subject to change without notice. Companies, names, and data used in examples herein are fictitious unless otherwise noted. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Microsoft Corporation.

2001 Microsoft Corporation. All rights reserved.

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Thai OpenType Specification
Microsoft Typography | Developer information | Specifications | OpenType font development