For what it's worth; Gimp, Ghostscript, and Android all use FreeType for text rendering. At best, they would require him to know how to use FreeType bitmaps cor

For what it's worth; Gimp, Ghostscript, and Android all use FreeType for text rendering. At best, they would require him to know how to use FreeType bitmaps correctly (i.e. gamma-correct blending, when to multiply colours in). Though he could easily go beyond that, it is very interesting stuff and I find it incredibly hard to stop myself from reading into FreeType.