dling
    parsing problems and invalid input about valid continuations for parsing.
    It returns a list of integer constants which correspond to the constants
    in the generated <tt>sym.java</tt>. You can retranslate the ids to their
    string representations, which where used in the grammar specification to
    declare (non)terminal names, with <tt>symbol_name_from_id(id)</tt>
    This can be typically used to implement syntax completion or more detailed
    error messages.
</dd><dt><tt>public String 