HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part I

EN Character Descriptor Formats 11-65
Compound Character Escapement (SI)
The escapement in design units of a compound character.
Number of Components (UB)
The number of components of a compound character.
Component List
This is a list of component descriptions. The list contains Number of
Components elements. Each component descriptor consists of 6
bytes as described in Table 11-46 below.
The Character Code is the character code number of a component of
a compound character. X-offset is the offset of that component from
the reference point (origin) in the x direction in design units. Y-offset is
the offset in the y direction of a component from the reference point
(origin) in design units.
Note The character code may be greater than the last code of the symbol
set that is implied by the font type since a compound character can
include components that are not part of the symbol set.
Character Descriptor and Data Format for
TrueType Fonts
Table 11-47 shows the format of the TrueType character descriptor
and data when a continuation block is not required. Table 11-49
(next page) shows the format of the TrueType character descriptor
and data with multiple character data blocks.
Table 11-46 Component Descriptor
Byte 15 (MSB) 8 7 (LSB) 0
0 Character Code
2 X Offset
4 Y Offset