- Extension
- .chq
- .zipx
- Format
- Binary
- Binary
- Category
- Developer
- Compressed
- Developer
- Microsoft
- PKWARE, Inc.
- Description
- Microsoft Compiled HTML Help is a proprietary format for online help files, developed by Microsoft and first released in 1997 as a successor to the Microsoft WinHelp format. It was first introduced with the release of Windows 98, and is still supported and distributed through Windows XP, Vista and Windows 7 platforms.
- WinZip, starting with version 12.1, uses the extension .zipx for ZIP files that use compression methods newer than DEFLATE; specifically, methods BZip, LZMA, PPMd, Jpeg and Wavpack. The last 2 are applied to appropriate file types when "Best method" compression is selected.
- MIME Type
- application/x-chq-help-file
- application/zip
