1Berkeley Yacc is an LALR(1) parser generator. Berkeley Yacc has been made 2as compatible as possible with AT&T Yacc. Berkeley Yacc can accept any 3input specification that conforms to the AT&T Yacc documentation. 4Specifications that take advantage of undocumented features of AT&T Yacc 5will probably be rejected. 6 7The data structures and algorithms used in Berkeley Yacc are all either 8taken from documents available to the general public or are inventions of 9the author. 10 11 Bugs may be reported to 12 13 corbett@berkeley.edu 14 15Do not expect rapid responses. 16