oc-spec"><div class="spec value anchored" id="val-check_fragment"><a href="#val-check_fragment" class="anchor"></a><code><span><span class="keyword">val</span> check_fragment : <span><a href="#type-fragment">fragment</a> <span class="arrow">&#45;&gt;</span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-ppr_program"><a href="#val-ppr_program" class="anchor"></a><code><span><span class="keyword">val</span> ppr_program : <span><a href="#type-program">progr