There is one other file type using
the XPM file extension!
.xpm - Image file
XPM file extension - DESQview macro file
What is xpm file? How to open xpm files?
File type specification:
The XPM file extension is related to an old application called DESQview which was a text mode multitasking program developed by Quarterdeck Office Systems which enjoyed modest popularity in the late 1980s and early 1990s. Running on top of DOS, it allowed users to run multiple DOS programs concurrently in multiple windows.
An *.xpm file contains macroes usable in the program.