Lexmark C762 - Manual (Page 215)

PostScript
4-38
setdoret
integer setdoret —
changes the PQET setting for the next page through the end of the print job.
The integer values allowed are:
0 turn PQET Off
1 turn PQET On
2 turn PQET On
3 turn PQET On
4 turn PQET On
The value you select for PQET returns to the user default setting when the print
job is finished.
This operator is equivalent to executing the following PostScript emulation
sequence:
<> >>
setpagedevice
Errors: rangecheck, stackunderflow, typecheck
setdostartpage
boolean setdostartpage
sets the DoStartPage system parameter to the value of boolean . The
DoStartPage system parameter must be present for the setdostartpage
operator to be present. For more information, see “DoStartPage” on page 4-67.
Errors: invalidaccess, stackunderflow, typecheck