The three-letter filename extension that indicates that a file is a program and can be run. If you start a DOS window from Windows (or if you are already in DOS) type DIR and you'll see the names of all the files stored in the current directory on your hard disk. To the right of the file name is the three-letter filename extension that describes the type of file. DOC means document, WAV means Wave or sound file, EXE means executable - a program file that can be run. To run a file with an EXE extension, just type in its name - you don't need to add the EXE suffix - and press Return.
