User`s guide

jobtimeout
Syntax: jobtimeout integer
Function Returns the number of seconds remaining before the job
timeout occurs. A returned value of 0 means the job
never times out.
Default 0
Errors stackoverflow
setjobtimeout†
Syntax: integer setjobtimeout
Function Sets the timeout for the current job to the value integer,
a non-negative integer specifying a time interval in
seconds. If the current job continues for integer seconds
without either completing or executing setjobtimeout
again, the PostScript interpreter executes a timeout
error. The value 0 disables the job timeout altogether.
At the beginning of a job, the printer initially sets the
job timeout to the default job timeout returned by
defaulttimeouts. (However, in interactive mode, the
initial job timeout is always 0.)
Errors rangecheck, stackunderflow, typecheck
Chapter 10
10-10 PostScript: Operator Dictionary