class="arguments"></ul>  <a class="source-link" href="https://github.com/Shinmera/clip/blob/64eedbbf637a874080bfcd351b69ee6d58588d7f/conditions.lisp#L19">Source</a>  </header> <div class="docstring"><pre>Condition signalled when a required attribute is missing.

See <a href="#CONDITION%20CLIP%3AATTRIBUTE-CONDITION" class="xref">ATTRIBUTE-CONDITION</a></pre></div> </article> </li>  <li> <article class="definition condition" id="CONDITION CLIP:NODE-CONDITION"> <header> <span class="visibility">EXTERNAL</span>