.daa - Power ISO Direct Access Archive. ( file extension daa ).

.dat - Data file format. Files containing generic input or output ( file extension dat ).

.dbt - Database Text format. Native file format of dBASE database memo field files.

.dcr - Director format. This is what happens to a Macromedia Director (.dir) file after it has been "shocked" by Macromedia Afterburner in preparation for the Web. ( file extension dcr ).

.dcs - Desktop Color Separation EPS file format. An extension of the standard .eps format developed by Quark. It saves the file into five separate EPS documents which can be read by applications such as QuarkXPress.

.dem - Digital Elevation Model format. Used by the US Geological Survey.

.des - Description format. Used to describe Delphi data in a format understandable both by the user and the program.

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.dib - Device Independent Bitmap file format. A Microsoft graphic file format similar to a .bmp.

.dir - Director format. Native movie file format of the Macromedia Director program. ( file extension dir ).

.dlg - Digital Line Graph file format. Used by the US Geological Survey to store geographical data.

.dll - Dynamically Linked Library format. A library which is linked to application programs when they are loaded or run rather than as the final phase of compilation. ( file extension dll ).

.dmg - Macintosh disk image.

.dms - Disk Masher System file format. An Amiga-specific compression system for storing floppy disks as one file which can then be transfered via bulletin boards or the Internet for decompression by the reciever. No longer widely used.

.doc - Document file format. Used with Microsoft Word document files and WordPerfect documents. ( file extension doc ).

.dot - Document Template format. Microsoft Word template file. (file extension).

.dpx - Digital Moving Picture Exchange format. Society of Motion Picture and Television Engineers standard file format for Digital Moving Picture Exchange.

.dvi - Digital Video Interactive format. Proprietary movie format utilized by the Action Media II adapter. ( file extension dvi ).

.dwg - Drawing file format. An AutoCAD vector format, used internally, and stored in binary format.

.dxb - Drawing Interchange Binary file format. Used by drawing programs such as AutoShade supplying simple geometric input to AutoCAD.

.dxf - Drawing Exchange Format. ASCII text file format used by AutoCAD programs as a complete representation of an AutoCAD drawing. ( file extension dxf ).