I attempted to run an RT-11 program under V10.1 of RSTS/E. Is there any way of invoking ODT or a DEBUG package under RSTS/E which is similar the SDX.SYS in RT-11 or "/DEBUG" in TSX-Plus? I can LINK ODT into the RT-11 program and use ODT that way. But I though that RSTS/E might support something a bit more user friendly than ODT at this point? Jerome Fine