DAT Data file

DAT WordPerfect Merge Data

DBF Aston-Tate dBASE database

DBX DataBeam image

DCR Shockwave file

DCS Desktop Color Separation file

DCX Fax image (based on PCX)

DDF BTRIEVE database

DEF SmartWare II data file

DEF C++ Definition

DER Certificate file

DIB Device-Independent Bitmap

DIC Dictionary

DIF Data Interchange Format spreadsheet

DIR Macromedia Director file

DIZ Description file

DLG C++ Dialogue Script

DLL Dynamic-Link Library

DMF X-Trakker music module (MOD) file

DOC FrameMaker or FrameBuilder document

DOC WordStar document

DOC WordPerfect document

DOC Microsoft Word document

DOT Microsoft Word document Template

DPR Borland Delphi project header file

DRV Driver

DRW Micrografx Designer/Draw

DSG DooM saved game

DSM Dynamic Studio music module (MOD) file

DSP Microsoft Developer Studio project

DSQ Corel QUERY file

DSW Microsoft Developer Studio workspace

DWG AutoCAD drawing eXchange format

DXF AutoDesk Drawing Interchange format