title: SVN tag log, what does this mean?
body: <p>I create a tag 7.0.42, why there is three entries?</p>
  
  <pre><code>/home/user/svn/stuff/Tomcat $ svn log https://example.com/stuff/Tomcat/tags/7.0.42/
  ------------------------------------------------------------------------
  r9 | user | 2013-10-11 14:17:59 -0400 (Fri, 11 Oct 2013) | 2 lines
  
  tag the initial version downloaded.
  
  ------------------------------------------------------------------------
  r8 | user | 2013-10-11 11:35:10 -0400 (Fri, 11 Oct 2013) | 3 lines
  
  Import Tomcat source.
  
  
  ------------------------------------------------------------------------
  r7 | user | 2013-10-11 11:16:00 -0400 (Fri, 11 Oct 2013) | 1 line
  
  create Tomcat project
  ------------------------------------------------------------------------
  /home/user/svn/stuff/Tomcat $
  </code></pre>