title: TortoiseSVN revert vs update
body: <p>What's the difference between following?</p>
  
  <ol>
  <li>(right click on the project folder) update to revision XXX</li>
  <li>(right click on the log list) revert to this revision</li>
  <li>(right click on the log list) revert changes from this revision</li>
  </ol>