1976-10-25 /decuslib10-05/01/43,50337/03/safeio.hlp 1976-10-25 /decuslib10-05/01/43,50337/23/safeio.hlp 1976-10-25 /decuslib20-03/01/decus/20-0078/libsim/safeio.hlp 1976-10-25 /decuslib20-03/01/decus/20-0078/sys/safeio.hlp