Two formats of font character definition are supported. These are:

Image format

The character glyphs are represented as pel images.
Outline format
The character glyphs are represented by vector data that traces the outline of the character.

Note: Intelligent Font Technology fonts (such as ATM Type-1 fonts) may be stored in a technology specific format, and thus will not conform to this definition for outline fonts.

The definition consists of a header portion and a portion carrying the characters themselves.

The header portion contains information about the format of the character definitions and data about each character including width data and the offset into the definition section at which the character definition begins. (See Definitions of Terms Used When Describing Fonts.)

• Proportional characters (a+b+c = character increment) for each character: a,b,c >= 0

• Characters where a, b, and c are definitions for all characters: b >= 0
  a, c any integer
  

Raster fonts contain a "null character". The character definition record for this occurs after the one for the last character. Thus the format has usLastChar+2 characters, although the null character is not counted in the range returned. The null character is composed of zeros and is always eight pels wide.

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