title: Zebra ZPL ^A in Zplviewer
body: <p>Trying to use ZPL code with ZPlViewer.  As noted from others it works with simple commands 
  So below simple code should work  .But in this example even the   command ^A0 fails ?.  </p>
  
  <pre><code>^XA^MCA^PR8^XZ
  
  ^XA
  
  ^DFR:TST.ZPL
  
  ^LH110,0
  
  ^FO0,60^FS^A0,30,20^FB250,1,0,C,0^FD{0}^FS
  
  ^FO5,120^A0,40,3
  
  ^XZ
  </code></pre>
  
  <p>Zplviewer   complains about line 5:</p>
  
  <pre><code>zplviewer.ParseException: Encountered "30" at line 5, column 15.
  Was expecting one of:
      "^XZ" ...
      &lt;C_MC&gt; ...
  </code></pre>
  
  <p>etc</p>
  
  <p>Any hints or is the ^A command not supported ?</p>