CALL_PROCEDURE calls the procedure specified by Name , passing any additional parameters as its arguments.
Although not as flexible as the EXECUTE function, CALL_PROCEDURE is much faster. Therefore, CALL_PROCEDURE should be used in preference to EXECUTE whenever possible.
The following example shows how to call the PLOT procedure indirectly with a number of arguments. First, create a dataset for plotting by entering:
Call PLOT indirectly to create a polar plot by entering: