r"></a><code><span><span class="keyword">val</span> subst_model_io : <span>phi:<span><a href="../../../../Ident/index.html#type-t">Ident.t</a> <a href="../../../../Subst/index.html#type-t">Subst.t</a></span> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-model">model</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-model">model</a></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-subst_model_param"><a href="#val-subst_model_param" class