Text Services Framework

Text Services Framework

A standalone Language Bar in Windows XP, with language selection menu open
Developer(s)	Microsoft
Operating system	Microsoft Windows
Platform	IA-32, x86-64, Itanium, ARM64
Predecessor	Input Method Manager (IMM32)
Type	Software framework
Website	docs.microsoft.com/en-us/windows/win32/tsf/text-services-framework

The Text Services Framework (TSF) is a COM framework and API in Windows XP and later Windows operating systems that supports advanced text input and text processing. The Language Bar is the core user interface for Text Services Framework.