A3 file extension is for Unrelated Inventions Audiotools Show Log
Similar to A3
386 - Virtual device driver Windows 386 enhanced mode3D2 - Atari Stereo CAD-3D 3D data file
3DM - QuickDraw 3D Metafile QuickDraw
3DMF - QuickDraw 3D Metafile QuickDraw
3DS - Graphics Autodesk 3D Studio
3FX - 3D effects CorelChart
3gp - Video format compatible with mobile devices
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