PRT1 Printers – Including IBM 4248 in Native Mode

Note: If the printer does not support the requested operation, the system ignores your request.

Code n1 n2 Requested Operation
FOLD     Print uppercase characters for any byte with equivalent bits 2 through 7.
UNFOLD     Print character equivalents for any EBCDIC byte.
CLRPRT     Clear print buffer. Applies if the printer has a data buffer. Causes all data contained in the buffer to be printed before the program receives control again.
ORDER     Applies only to an IBM® 4248 operating in native mode.
  DHC   Disable horizontal copy. Stops horizontal copy printing.
  EHC   Enable horizontal copy. Starts horizontal copy printing if your printer's FCB contains an FCB image with a horizontal copy control code.
Horizontal copy printing is turned off automatically when one of the following occurs:
  • Your program issues a CLOSE (or CLOSER) macro for the printer file.
  • The system initiates an automatic close for the printer file at the end of the job step.
  PURDAT   Purge data. Causes all data stored in the printer's data buffer to be erased.