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Microsoft Winhelp source data
File type: Source code and script file
An ls1 file extension is associated with the Microsoft Winhelp.
File type category:
Source code and script file
Date updated: December 30, 2024
Record marked as obsolete and not updated for a long time.
The .ls1 file extension is related to the Microsoft Winhelp a Windows help files authorizing and editing application. The Winhelp file format is based on Rich Text Format (RTF). The ls1 file stores data sources.
WinHelp was removed in Windows Vista to discourage software developers from using the obsolete format and encourage use of newer help formats.
Software applications that handle other tasks involving ls1 files:
Microsoft Windows
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