lass="nb">len</span><span class="o">=</span><span class="p">:),</span><span class="k">allocatable</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">returned</span><span class="w"></span>
<span class="w">   </span><span class="k">if</span><span class="p">(</span><span class="n">exists</span><span class="p">(</span><span class="n">filename</span><span class="p">))</span><span class="k">then</span>
<span class="k">      </span><span class="n">returned</span><span c