List array</span>
0109 ImpTimeIdx=findstr(cell2mat(FileList),<span class="string">'.imptime'</span>);
0110 AbravibeIdx=findstr(cell2mat(FileList),<span class="string">'.mat'</span>);
0111 <span class="keyword">if</span> handles.Overlay
0112     <span class="keyword">if</span> ~isempty(ImpTimeIdx) &amp; ~isempty(AbravibeIdx)
0113         errordlg(<span class="string">'You cannot overlay plot a mix of imptime and ordinary files!'</span>)
0114     <span class="keyword">elseif</span> ~isempty(AbravibeIdx)
0115 