#LEX ????
Well, you could look at the UNIX documentation, but I don't really
recommend it, because the online docs are pretty sparse. There is a book
called "LEX & YACC" which is part of the Nutshell series published by
O'Reilly and Associates. It not only explains how to use LEX and YACC, but
it also has appendices that talk about FLEX and BISON. It costs about
$24.95
Steve