6.1 Markup for the Preamble 
- \release
    {ver}
 
- 
      Set the version number for the software described in the
      document.
    
 
- \setshortversion
    {sver}
 
- 
      Specify the ``short'' version number of the documented software
      to be sver.
    
 
Release 2.5.4, documentation updated on 23rd December, 2008.
 
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