>But does the IBM documentation explicitly say that the parent >TCB cannot do this? "That which is not specifically forbidden, >is allowed."
Wrong. 100%. That which is not specifically allowed is not supported and you do at your own (system's) risk.. >DCB parameter Mention is made of the ATTACH DCB parameter. ATTACH has both a DCB parameter and a TASKLIB parameter. The DCB is used to fetch the named entry. TASKLIB is used to set the tasklib. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html