pan> <span class="keyword">type</span> <span>'a <a href="Extend/index.html#type-t">t</a></span> := <span><span class="type-var">'a</span> <a href="Extend/argument-1-Base/index.html#type-t">Base.t</a></span></code></dt><dd><p>Interface builder for equatable polymorphic unary types.</p></dd></dl></div></body></html>