Encoded Symbol Set Designator (Ui); Format (Ub); Symbol Set Type (Ub) - HP PCL 5 Reference Manual

Encoded Symbol Set Designator (UI)

This field must match the ID code in the Symbol Set ID code
command.
This field contains the symbol set ID code. The symbol set ID code is
calculated from a symbol set ID selection value using the following
formula:
where # is the decimal number (0 to 1023) and ID is the ASCII
character code of the letter.
For example:
Assume the ID selection value selected for this symbol set is 17Q,
then:
The symbol set ID code is 561.

Format (UB)

Set this field to 1 for MSL (Intellifont) or 3 for Unicode (TrueType).
Unrecognized values cause the symbol set definition to be ignored.

Symbol Set Type (UB)

This field defines the printable and unprintable codes for the symbol
set.
0
1
2
10-6 User-Defined Symbol Sets
Symbol Set ID Code = (# * 32) + (ID - 64)
(17 * 32) + (81 - 64) = 561
Bit Field
7-bit, 32-127 are printable.
8-bit, 32-127 and 160-255 are printable.
8-bit, 0 - 255 character codes are printable,
however, to print codes 0, 7-15, and 27, the
printer must be in transparency mode.
Designated Use
EN