AN EXTENDIBLE COMMAND ANALYSER.

This paper describes an extendible command analyser. The system, known as Mistral, is interactive and permits dynamic language design and modification. It contains a base programming language which, when coupled with a set of special purpose routines, provides a semantic language in which particular applications languages can be developed. A pattern language allows commands to be specified in a syntax suited to the needs and experience of particular classes of users. The basic capabilities of the system are outlined in this paper, as is the implementation. Projected developments of the project, which is an on-going one, are also described. [ABSTRACT FROM AUTHOR]