CPU time usage. Global time limits ($SIGNON ccid T=maxtime) apply to an entire job or session. Local time limits apply to running individual programs ($RUN program T=maxtime). Global and local limits on the number of pages to be printed and the number of cards to be punched can also be set ($SIGNON ccid P=maxpages C=maxcards and $RUN program P=maxpages C=maxcards). A default local CPU time limit can be established using the $SET TIME=maxtime command. References 1960s software Discontinued operating systems IBM mainframe operating systems Operating systems by architecture Time-sharing operating systems