Notes about the GRAFSAO file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The GRAFSAO file type is primarily associated with 'Aleph One' by Marathon Open Source. Aleph One is an open-source descendant of Bungie's _Marathon 2_ first-person 3D shooting game. A1 plays Marathon 2, Infinity, and 3rd-party content on a wide array of platforms, with (optional) OpenGL rendering, Internet play, Lua scripting, and more. File name extensions are usually not necessary for function of Aleph One because the antecedent source code was on the Macintosh platform.