 stream (<I>System.out</I>) in a format that several
editors can use to highlight the errors. If the <tt>-M</tt> option is
exercised the error messages are merged with a source listing and sent to the
trace output file <i>listing.txt</i>. It is possible to develop yet other ways
of dealing with error output (see section 3.4).</P>

<H3>3.1 The Parser interface</H3>

<P>A parser generated by this version of Coco/R has the following interface: </P>

<PRE>   class Parser {
     static Token token;              