The DBCS printers can rotate double-byte characters 90 degrees counterclockwise before printing so that the printed output can be read vertically.
For example, the character rotation function takes characters as shown:
and rotates them so that you can read the printed characters vertically:
Specify character rotation with the IGCCHRRTT parameter on the Create Printer File (CRTPRTF), Change Printer File (CHGPRTF), and Override with Printer File (OVRPRTF) commands, or with the DDS keyword IGCCHRRTT for the file you are printing. This function rotates only double-byte characters. It does not rotate alphanumeric characters.