The REL Command Language.
Sara Gomberg · 1973
Three basic notions--version, session and command language-are discussed which are essential for a user of the Rapidly Extensible Language (REL) system. The first is defined as a language--data base package consisting of a language, data and definitions. A session is stipulated to be the period during which the user operates at a terminal, and the command language is the means by which he communicates with and manipulates other versions. Details are next provided about the commands used to initiate and terminate sessions and to manipulate versions. Following this, the enterable and copyable prr'perties of versions are discussed and three categories of users identified--anyone, creator, and no one. Commands used to establish valid user identification names are presented and, lastly, some language implementor commands are described. Examples from the REL batcL system are appended. (PB)