v class="odoc-spec"><div class="spec value anchored" id="val-dir_sep"><a href="#val-dir_sep" class="anchor"></a><code><span><span class="keyword">val</span> dir_sep : <span class="xref-unresolved">Core__</span>.Import.string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-concat"><a href="#val-concat" class="anchor"></a><code><span><span class="keyword">val</span> concat : 
  <span><span class="xref-unresolved">Core__</span>.Import.string <span class="arrow">&#45;&gt