ield"><a href="#type-label.action" class="anchor"></a><code>action : <span><a href="index.html#type-assignment">assignment</a> list</span>;</code></td></tr><tr id="type-label.pattern" class="anchored"><td class="def field"><a href="#type-label.pattern" class="anchor"></a><code>pattern : <a href="index.html#type-label_pattern">label_pattern</a>;</code></td></tr></table><code>}</code></dt><dt class="spec type" id="type-vertex"><a href="#type-vertex" class="anchor"></a><code><span class="keyword">type</span> v