Printable.F</a>.formatter <span>&#45;&gt;</span> <a href="index.html#type-key">key</a> <span>&#45;&gt;</span> unit</code></dt><dt class="spec value" id="val-pp"><a href="#val-pp" class="anchor"></a><code><span class="keyword">val</span> pp : <span>pp_value:<span>(<a href="../../../../../IStdlib/PrettyPrintable/index.html#module-F">IStdlib.PrettyPrintable.F</a>.formatter <span>&#45;&gt;</span> <span class="type-var">'a</span> <span>&#45;&gt;</span> unit)</span></span> <span>&#45;&gt;</span> <a href="../../..