  This document describes a couple of tools that help to quickly design and
develop computer (formalized) languages. The first one use Flex to perform
lexical analysis and the second is an extention of Prolog DCGs to perfom
syntactical analysis. Initially designed as a new component for the Centaur
system, these tools are now available independently and can be used to
construct efficient Prolog parsers that can be integrated in Prolog or
heterogeneous systems. This is the initial version of the CLF documentation.
Updated version will be available online when necessary.
