HP 5961-0509 Character Descriptor and Data Format for TrueType Fonts, Number of Components UB

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.

	Table 11-46 Component Descriptor
	Byte	15 (MSB)	8	7	(LSB) 0
	0	Character Code
	2	X Offset
	4	Y Offset
	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.

EN Character Descriptor Formats 11-65