Source code file written in the Euphoria programming language; contains code that can be executed on Windows, MS-DOS, Linux, and FreeBSD platforms using the Euphoria interpreter, which is included with the Euphoria application installation. Euphoria source code files also use the .EX extension. By convention, the "w" character in ".exw" is used to specify Euphoria source code files developed in the Windows environment, since the Windows program that executes the code is named exw.exe. The MS-DOS program is named ex.exe.