symbol_name_from_id(int id)</tt>
</dt><dd>This method translates numerical constants, representing symbol ids 
    back to their textual representation, declared in the <tt>.cup</tt>
    parser specification file.
</dd><dt><tt>public void syntax_error(Symbol cur_token)</tt>
</dt><dd>This method is called by the parser as soon as a syntax error is detected
    (but before error recovery is attempted).  In the default implementation it
    calls: <tt>report_error("Syntax error", null);</tt>.
</dd><dt><tt>publ