Within NPF, print data can be transformed at three different points in the flow. These transformations occur in the following order:

• VTAM® only - The SCS or 3270 data stream received from the session partner LU is converted into a series of variable-length print records, each starting with an ASA carriage-control character.
• JES or VTAM - If the user has provided an input record exit, that exit is given the opportunity to modify each print record before it is queued.
• JES or VTAM - Prior to transmission to LPD, the print data set can be transformed as directed by user-specified LPR options. The same transformations available via the stand-alone LPR command can be used within the Network Print Facility, including the following information:
  • Translation
  • PostScript^** output
  • Page header support