BYACC, UTILITIES, Parser generator Yacc reads the grammar specification in the file filename and generates an LR(1) parser for it. The parsers consist of a set of LALR(1) parsing tables and a driver routine written in the C programming language. Yacc normally writes the parse tables and the driver routine to the file y_tab.c This is a port of Berkeley yacc (BYACC) to OpenVMS. The code has been changed from K&R form to ANSI C, and generates ANSI C. Author: Thomas E. Dickey (dickey@herndon4.his.com)