RUN
From Dark Signs Online
RUN filename
Runs the specified file as a script. The script can also be ran by simply typing its filename into the console.
Parameters
filename The file to run.
NOTE: RUN executes a file as if it were a script, so a file must be a script in order to run correctly. If you wish to simply view the contents of a file in the console, use CAT instead.
Example
Run the script "test.ds"
RUN test.ds