I-Data 5250 ALLY - Manual (Page 184)

AGILE 5250 ALLY User’s Guide and Reference Page B-2
Command: Null (NUL)
Format: 00
Printers: 3812, 4214, 5219, 5224, 5225, 5256
Action: No operation is performed. No character is printed.
IBMEMUL: No operation.
275EMUL: NUL is sent to printer.
Command: ASCII Transparency (ATRN)
Format: 03 nn [ASCII data]
Printers: IBM printer emulation on 3197 display station
Action: The following nn bytes of data are sent directly to the
printer. The nn parameter counts the number of
following bytes. The count nn does not include the count
byte itself.
IBMEMUL: Same as IBM.
275EMUL: No operation.
Command: Horizontal Tab (HT)
Format: 05
Printers: 3812, 5219
Action: Moves the current print position to the right one Tab
stop. If there are no Tab stops to the right, a Space is
performed.
IBMEMUL: Same as IBM.
275EMUL: Sends HT to printer.