a href="../../../../../Annot/index.html#type-t">Annot.t</a></span></span></code></div></div><div class="odoc-spec"><div class="spec type anchored" id="type-type_expr_desc"><a href="#type-type_expr_desc" class="anchor"></a><code><span><span class="keyword">and</span> type_expr_desc</span></code></div><div class="spec-doc"><p>The type of guest-level <em>type expressions</em>, denoting types</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-is_bool_type"><a href="#val-is_bool_type"