User`s guide

autoselecttimeout
Syntax: autoselecttimeout integer
Function The wait timeout currently in effect for the ESP mode;
i.e., the number of seconds the printer waits to receive
additional characters from the host computer before
trying to select a language. This period of time is
ignored if the printer receives 256 bytes of data before
the default timeout occurs. This is ignored if ESP is not
the interface mode.
Default 3
Errors rangecheck, stackunderflow, typecheck
setautoselecttimeout
Syntax: integer setautoselecttimeout
Function Sets the wait timeout for ESP mode. A PostScript
program may change it to any non-negative integer
value. It is ignored unless the printer is in ESP mode.
Default 3
Errors rangecheck, stackunderflow, typecheck
Chapter 10
PostScript: Operator Dictionary 10-13