>access_expression</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../index.html#type-access_expression">access_expression</a> option</span></span></code></div><div class="spec-doc"><p><code>append ~onto y</code> replaces the base of <code>y</code> with <code>onto</code> itself; this makes sense if no <code>Dereference (AddressOf _)</code> instances are introduced</p></div></div><div class="odoc-spec"><div class="spec type anchored" id="type-t"><a href="#type-t" class="anchor"></a><code><sp