ileName=strcat(InPrefix,int2str(RefChannel(RefFileNo)),<span class="string">'.mat'</span>);
0050         <span class="keyword">if</span> exist(RefFileName,<span class="string">'file'</span>) ==2
0051             load(RefFileName,<span class="string">'-mat'</span>)
0052             <span class="keyword">if</span> exist(<span class="string">'start'</span>,<span class="string">'var'</span>)
0053                 Data=Data(start:stop);
0054             <span class="keyword">end</span>
0055             <span clas