n> <span><a href="../../Trace/Instr/index.html#type-t">Trace.Instr.t</a> option</span></code></dt><dd><p>Return the <span class="xref-unresolved" title="unresolved reference to &quot;Instr.t&quot;"><a href="../index.html#module-Instr"><code>Instr</code></a>.t</span> data of the instruction at address, and <code>None</code> if the instruction was invalid</p></dd></dl><dl><dt class="spec value" id="val-pp_slot"><a href="#val-pp_slot" class="anchor"></a><code><span class="keyword">val</span> pp_slot : <a href=