Files with gna file extension are presentations in old Genigraphics Graphics Link format.
GNA file extension - Genigraphics Graphics Link Presentation data
What is gna file? How to open gna files?
File type specification:
The gna file extension is mainly related to Genigraphics Graphics Link Presentation format. It is an old graphic format derived from NASA's 1960 flight simulator. Probably very rare used format.
This gna 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.