'prep' table stores the instructions that make up the
control value program, a set of TrueType instructions that will be executed
once when the font is first accessed and again whenever the font, point
size or transformation matrix change. It consists of an ordered list of
instructions opcodes. Each opcode is a byte. The tag
referring to the preProgram, is anachronistic but some people still call
the control value program the preProgram.
More information on the control value program can be found in Instructing Fonts.
|uint8||controlValueProgram[length]||Set of instructions executed whenever the point size or font transformation change|
[Table of Contents]