class="special">::=</span> <span class="special">(</span><span class="identifier">suite</span> <span class="char">'/'</span><span class="special">)?</span> <span class="identifier">pattern_list</span>
<span class="identifier">pattern_list</span>  <span class="special">::=</span> <span class="special">(</span><span class="identifier">pattern</span> <span class="char">','</span><span class="special">)*</span> <span class="identifier">pattern</span>
<span class="identifier">suite</span>         <span class="sp