Help files used by the operating system and programs which tell the user how to make use of the operating system and programs installed, since Windows Vista usually in the chm format.
|.bmk - Windows Help Bookmark File (Text Files)
BMK files are bookmarks used by Microsoft Help and make use of the .bmk file extension. These bookmark files are used when the user searches the help file... [More Information]
|.gid - Windows Help Index File (Misc Files)
Index files used by Windows Help use the .gid file extension this is created when Help is first run where it creates a Table of Contents which makes it... [More Information]