pecial">&lt;&lt;</span> <span class="string">", "</span> <span class="special">&lt;&lt;</span> <span class="identifier">karma</span><span class="special">::</span><span class="identifier">double_</span> <span class="special">&lt;&lt;</span> <span class="char">')'</span><span class="special">,</span> <span class="comment">// generator grammar (format description)</span>
    <span class="identifier">p</span><span class="special">);</span>                                                     <span class="commen