sert</span> (<span class="mdzsyn-coresym">deep=</span>
  @{ <span class="mdzsyn-keyword">:x</span> @[@{<span class="mdzsyn-keyword">:a</span> <span class="mdzsyn-number">1</span>} <span class="mdzsyn-number">3</span> <span class="mdzsyn-string">@"hi"</span>] <span class="mdzsyn-keyword">:y</span> <span class="mdzsyn-number">2</span> }
  @{ <span class="mdzsyn-keyword">:x</span> @[@{<span class="mdzsyn-keyword">:a</span> <span class="mdzsyn-number">1</span>} <span class="mdzsyn-number">3</span> <span class="