Quick reference command languages chart

It is not possible to remember more than a few command languages accurately. If a command language is used infrequently it is very easy to forget the commands or make mistakes because the command is entered incorrectly. To solve this problem a quick reference chart of the main searching and printing commands and support features for the following command languages has been compiled — Basis, BRS, Dialog, Elhill, Eurolanguage, Grips/Dirs, Orbit, Quest, Questel. This paper describes the compilation of the chart and discusses the differences between command languages.