eter</em> name <code>id</code> by expression <code>phi id</code></p></div></div><h4 id="pre-processing"><a href="#pre-processing" class="anchor"></a>Pre-processing</h4><div class="odoc-spec"><div class="spec type anchored" id="type-ppr_env"><a href="#type-ppr_env" class="anchor"></a><code><span><span class="keyword">type</span> ppr_env</span><span> = <span><a href="#type-type_expr">type_expr</a> <a href="../../../../../Env/index.html#type-t">Env.t</a></span></span></code></div><div class="spec-doc"><p>Since