HLP
hlp is a filename extension associated with Windows Help files produced by the WinHelp system. These compiled help files were used to provide software documentation and context-sensitive assistance within Windows applications. A typical .hlp file contains a collection of topics, a contents or table of contents, an index, and a search function, all interconnected through topic IDs and hyperlinks.
The content behind an .hlp file is usually created from source materials written in rich text or
WinHelp, the original toolchain for .hlp files, gained prominence in the 1990s and remained common through the
Today, .hlp files are mostly found in older software distributions and archival collections. They are superseded