NovSpaceLimit returns the disk space limit for the user on the specified
volume. You can also use this command to set the limit. If space is
unlimited, a -1 is returned. Setting the space limit to -1 allows for
unlimited space.
Example:
Writeln NovSpaceLimit ('BILL','F:') ; Bill's space limit on F:
NovSpaceLimit ('BILL','SYS:') = 2000000 ; Limits Bill's space