title: how to open a file from a GUI?
body: <p>How can I open a script in editor from a GUI push button callback?</p>
  
  <p>I've tried:</p>
  
  <pre><code>function load_Callback(hObject, eventdata, handles)
  
  uiopen(myfile.m)
  </code></pre>
  
  <p>But it doesn't work!</p>
  
  <p>Cheers,</p>
  
  <p>Toby</p>