File Extension Glossary

http://www.gateway2000.com/support/custserv/glossary/fileformat/a.htm (Amiga Plus Extra No. 5/97, 05/1997)

*.abf*		Adobe Binary Screen Font format. The binary version of a .bdf format.
*.acr*		American College of Radiology file format. This file format is a standard for ACR-NEMA (National Electrical Manufacturers Association) medical image files.
*.adi*		AutoCAD Device-Independent Binary Plotter format. Generated by AutoCAD as monochrome bitmaps.
*.afm*		Adobe Font Metrics format. ASCII-based file format used for storing font metric data as human-readable data.
*.ai*		Adobe Illustrator format. Native format of the Adobe Illustrator program. A variation of the .eps format.
*.aif, .aiff*		Audio Interchange File Format. This sound format is predominantly used by Silicon Graphics and Macintosh applications.
*.ani*		Animated cursor file format. Used with animated cursors in Windows-based machines.
*.arc*		Archive file format. Most commonly associate with DOS-based machines. This format stores 1+ files in a compressed format in an archive file.
*.arj*		Archive by Robert Jung. This format stores one or more files into a compressed archive.
*.art*		Clip Art file format. This extension is used with various types of clip art, including First Publisher and Ashton-Tate.
*.art*		Another Ray Tracer format. Native file format of the ART (Another Ray Tracer) ray tracing package.
*.asc*		ASCII image file format.
*.asm*		Assembly language file format.
*.asp*		Active Server Page format. An open, compile-free application environment in which you can combine HTML, scripts and reusable ActiveX server components to create dynamic and powerful Web pages.
*.au*		Audio U-law (pronounced mu-law) file format. This sound format is most populous on the Internet and boasts small file sizes.
*.avi*		Audio Video Interleaved file format. Windows multimedia video format that interleaves waveform audio and digital video.
*.avr*		Audio Visual Research file format. Audio format used to play Macintosh sound files.
*.avs*		Application Visualization System format. High quality digital video format most often indicating a Digital Video Interactive (.dvi) file that can only be viewed by an appropriate Action Media II adapter.