Hz - program is a typographic font utility for computers that of the German typographer Hermann Zapf and Peter Karow of the Hamburg company URW Software & Type GmbH has been developed. The aim of the hz - program was to reach for the first time with a computer program a pleading that comes close to the quality of the kit 42-line Gutenberg Bible.
The hz - program was the first program that will not only change word spacing during justification, to achieve a balanced typeface, but also the kerning and the set width of each letter so modified that as a result of the gray value of the recessed surface appeared uniform.
The hz - program was never marketed as a software product. The process was patented on 19 October 1984, the European Patent Office under the number 0466953 B1. The Adobe company later bought the patent to use the brief method in their program InDesign.