">item</a> array</span></span></code></li></ol></div><div class="spec-doc"><p>Represents the change or lack of change in a line or character between the old and new version.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pp_diff"><a href="#val-pp_diff" class="anchor"></a><code><span><span class="keyword">val</span> pp_diff : 
  <span><span class="xref-unresolved">Ppx_deriving_runtime</span>.Format.formatter <span class="arrow">&#45;&gt;</span></span>
  <span><a href="#type-di