For included files, the extension can be changed to idms . 0dms cannot be included. Targets are the encapsulated tasks that DDMS is to perform. Target names are case sensitive. This will instruct DDMS when it is called with no options, that hello is the first target that should be evaluated.
Users can also define there own functions.
Since DDMS does not contain any built-in macros, platform independent DDMS files are obtained by extending user functions. The order in which the functions appear in the target definition is important. They are evaluated in the order that they appear in the DDMS file. When WHEN is a three valued data type in the DDMS system. The three values are time , diff , and always .