l">','</span><span class="special">)</span> <span class=
      "special">&gt;&gt;</span> <span class=
      "identifier">real_p</span><span class="special">)</span></code>
</pre>
    <p>
      Notice <tt>ch_p(',')</tt>. It is a literal character parser that can
      recognize the comma <tt>','</tt>. In this case, the Kleene Star is
      modifying a more complex parser, namely, the one generated by the
      expression:
    </p>
    
    <pre><code><font color="#000000">    </font></code><code><span class=