The cyberterminal he was using had the resources and Andy used them ruthlessly to flay open the corrupted file and spread its entrails for inspection. In among the expected system routines he found a pigback, a program designed to operate along with and within another. Upon examination, it looked to be an association reinforcer or a mood modifier. Whatever it was, it had minor simsense functionality. He forced a code read onto the pigback and learned that it was an associational reinforcer designed to give him warm fuzzies whenever Telestrian Cyberdyne was mentioned or brought up on an internal file.