HP PCL/PJL reference - PCL 5 Comparison Guide

ENWW Printer-Specific Differences 2-33
If the value field is 38, character codes in the range 0x80-0xFF are
processed as the first byte of a two-byte character. The following byte
is processed as the second byte of the two-byte character. All
character codes outside this range are processed as one-byte values.
This method can be used for parsing Asian eight-bit encoding
specifications, such as the Big Five and TCA encoding specifications
(Taiwan), and KS C 5601-1992 and GB 2312-80, which can be either
7 or 8 bit.
Character Text Path Direction Command
This command allows the user to vertically rotate text for use in
vertical writing applications.
?&c#T
Using
?&c0T, the printer’s current active position (CAP) advances
left to right, and linefeed advances top to bottom with horizontal,
upright characters.
Using
?&c–1T, the following actions occur:
• Full-width characters in large fonts are rotated
counter-clockwise 90 degrees (“vertical rotated” characters).
• Vertical substitutes are made for characters which change
their appearance, orientation, or positioning when written
vertically.
• All other characters are unaffected by this setting.
• The vertical-rotated printing mode (
?&c-1T) has the effect of
transforming a portrait page with horizontal text into a
landscape page with vertical text. The PCL Print Direction
command can be used to achieve other text orientations.
# = 0 - Horizontal printing
-1 - Vertical rotated printing
Default =0
Range =0, 1