c_custom_error"><a href="#val-desc_custom_error" class="anchor"></a><code><span class="keyword">val</span> desc_custom_error : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="index.html#type-error_desc">error_desc</a></code></dt><dd><p>Create human-readable error description for assertion failures</p></dd></dl><dl><dt class="spec type" id="type-pnm_kind"><a href="#type-pnm_kind" class="anchor"></a><code><span class="keyword">type</span> pnm_kind</code><code