User`s guide

emulationwaittimeout
Syntax: emulationwaittimeout integer
Function The wait timeout currently in effect for the emulation
mode; i.e., the number of seconds the printer waits to
receive additional characters from the host computer
before it gives up and abort the current job by executing
a timeout.
Default 5
Errors rangecheck, stackunderflow, typecheck
setemulationwaittimeout
Syntax: integer setemulationwaittimeout
Function Sets the wait timeout for the emulation mode. A
PostScript program may change it to any non-negative
integer value. (However, in interactive mode, the wait
timeout is always 0.)
Default 5
Errors rangecheck, stackunderflow, typecheck
Chapter 10
10-12 PostScript: Operator Dictionary