The PLATO and NovaNET computer-based instructional systems use a fixed system character set ("normal font") and an author-definable character set ("alternate font"). The alternate font lets the author construct his own symbols and bitmapped pictures. This expository catalog allows users to determine quickly (1) whether there is a character set already available that is suitable for a given use; (2) whether there is one available that might be copied and modified to make it suitable; or (3) whether concepts from more than one character set might be combined. It can assist new creation by allowing a designer to quickly scan the different approaches that other designers have taken to a given character or set of characters. The catalog presents a brief history of the displays and an explanation of charset utilities and the displays; however, it assumes that the user is familiar with the PLATO or NovaNET system and its terminology. A system charset for NovaNET/ASCII terminals, a list of pictures in PSO charset file "pictures," and a list of examined charsets not included in this catalog are appended. (RP)