HELP GRAMMAR A. Sloman, 1980 The command LIB GRAMMAR invokes a program which enables you to type in context-free grammars (with left and right recursion) and either build a parser, using SETUP, or generate sentences at random, using GENERATE. For further details of these facilities, see TEACH *GRAMMAR. Additionally, there is a semantics package which extends LIB *GRAMMAR (see HELP *FACETS for details). There is a (slower) but more powerful package called LIB *TPARSE which finds ALL parses where LIB *GRAMMAR will find only one - see HELP *TPARSE for details of this.