---
title: Introduction to Supporting Unicode Input
framework: carbon
role: article
path: apple-archive/documentation/Carbon/Conceptual/Supporting_Unicode_Input/sui_intro
---

# Introduction to Supporting Unicode Input

Describes legacy systems that introduced international text in Mac OS X.

## See Also

For information on ATSUI see *[ATSUI Programming Guide](../../ATSUI_Concepts/atsui_chap1/atsui_intro.html#//apple_ref/doc/uid/TP30000984)*.

For information on MLTE see *[Handling Unicode Text Editing With MLTE](../../HandlingUnicodeText_MLTE/mlte_intro/mlte_intro.html#//apple_ref/doc/uid/TP30000983)*.

[Next](../sui_concepts/sui_concepts.html)

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