TRU truncates files. Though PIP will also truncate files, PIP will change the revision date on all files specified, even if they did not require truncation. This will cause an incremental backup program (such as BRU) to needlessly backup files which have not been changed. TRU first ascertains whether or not a file requires truncation before invoking PIP to actually do the truncation. NOTE: THIS PROGRAM REQUIRES THAT A SCRATCH DIRECTORY LB:[12,1] BE AVAILABLE TO ALL USERS. This program runs under IAS v3.0. To use under RSX-11M, replace the object runsys.obj with the object produced by runsysrsx.ftn.