COST WILL READ THE PDSUPF.DAT FILE BY DEFAULT, OR A SPECIFIED COPY
OF SUCH A FILE, AND CALCULATE A USAGE "COST".  THE FACTORS WE USE
ARE EVIDENT FROM THE OUTPUT OF THE PROGRAM.  OTHER INSTALLATIONS
OBVIOUSLY WOULD WISH TO CHANGE THEM.
 
INDIVIDUAL USERS WILL GET ONLY THE COST VALUE
FOR THEIR OWN ACCOUNT.  RUNNING COST ON THE
SYSTEM ACCOUNT [1,1] WILL GIVE A COMPLETE LIST.
 
A NORMAL PROCEDURE HERE IS TO COPY THE PDSUPF.DAT FILE MONTHLY AND
TO THEN USE:
	USERS UPDATE/ZERO ALL