oresym">def</span> <span class="mdzsyn-symbol">res</span> (<span class="mdzsyn-coresym">dofile</span> (<span class="mdzsyn-symbol">p</span> <span class="mdzsyn-keyword">:out</span>) <span class="mdzsyn-keyword">:source</span> <span class="mdzsyn-symbol">url</span> ;<span class="mdzsyn-symbol">args</span>))
  (<span class="mdzsyn-keyword">:wait</span> <span class="mdzsyn-symbol">p</span>)
  <span class="mdzsyn-symbol">res</span>)

(<span class="mdzsyn-coresym">defn-</span> <span class="mdzsyn-symbol">check-h