hooks into
the parser and error reporters which may be useful in developing semantic
actions within the parser, as well as in developing methods in supporting
classes like table handlers.</P>

Calls to <I>Error(n)</I> are automatically inserted into the generated parser
for the purposes of reporting syntax errors.  The error numbers <I>n</I> are
generated by Coco/R along with appropriate error messages that can be
displayed and related to the position of the <I>lookahead</I> token.  There may be
situations 