There are 4 other file types using
the GRA file extension!
.gra - Microsoft Graph chart
.gra - Microsoft Flight Simulator file
.gra - Lotus Notes language dictionary file
.gra - STN Express transcript graphics file
What is gra file? How to open gra files?
The GRA file extension is also reported to have been used for some sort of object graphic document format from OpenGL. May be old file type and no longer used.
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