Files with gmp file suffix are associated with the GEM Publisher. A gmp file contains document.
GMP file extension - GEM Publisher document
What is gmp file? How to open gmp files?
File type specification:
The gmp file extension is related to the GEM Publisher, a desktop publishing software developed for GEM (Graphics Environment Manager) developed by Digital Research, Inc.
The gmp file contains document from GEM Publisher.
This gmp file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.