The AAF Font File Format is used to store fonts in Fallouts 1 & 2.. Only the AAF files used in the English versions are discussed here, there may or may not be variations for other languages. The AAF file stores a separate glyph for each of the 256 position in the ASCII table. The fonts in an AAF file are typically non-fixed size, i.e. each glyph has it's own width and height. A glyph is defined by a rectangular bitmap representing the pixels of the glyph, corresponding to the way that it appears on the screen. Each pixel can have a possible value in the range of 0 to 9.