FretQwik is combination alphanumeric text font, and guitar fret diagram builder. Half of the font consists of ordinary alphanumeric characters from a third-party public license font (see font internals for details). If you inspect FretQwik without using a character map, you won't see the frets. The other half of the font has component symbols that can be pieced together to build nearly any standard guitar chord (6-string guitar, or 4-string ukelele or lute).