This switch (/Z) is similar to /K but for "zombies" rather than "phantoms". A zombie is a job that is trying to exit but cannot because it lacks some kind of critical resource (like a terminal or its original parent). Unlike phantoms, zombies can be a significant drain on the CPU resources of the system. In most cases, zombies are related to some kind of messy telnet disconnection. (Activate TRACE=SIGHUP in miame.ini or using SET.LIT and then examine the ashlog.log file for further information about such disconnects.)