variable">variable</a> * <a href="../index.html#type-term">term</a>)</span> <span class="xref-unresolved">Base</span>.list</span> <span class="arrow">&#45;&gt;</span></span> <span><span>(<a href="../index.html#type-term">term</a> * <a href="../index.html#type-term">term</a>)</span> <span class="xref-unresolved">Base</span>.list</span></span></code></div></div><div class="odoc-spec"><div class="spec value" id="val-(+)" class="anchored"><a href="#val-(+)" class="anchor"></a><code><span><span class="keyword">v