From a RUN() function in a map rule

To execute a map from a map rule, use the RUN() function as follows:

RUN ( "map","exec_command..."] )
Specify the name of the compiled map (.mmc) file to run. If applicable, include the full path or a relative path to the directory that contains the map file.
Specify any execution command and its associated options you want to override the settings compiled into the map file when the specified map is run.