Comparing versions of a wiki page

Using the View history option in the Options panel, you can view previously saved versions of the page and compare them.

Navigate to a wiki page.
Click View history on the Options panel. The page history appears. You can view the previous revisions by clicking the revision number. For example, in the following screen capture you could simply view the first version of the page by clicking Revision 1.
To compare two versions:
1. Select the check box for both versions you want to compare. (You can only compare two versions of the page.)
2. Click Compare versions.
  
  The comparison window appears. Deletions that happened in the previous version (if any) are shown in red and struck through. Additions that happened in the most recent revision are shown in green.
  
  The top of the window shows you which versions you are comparing, and links to those versions as well as the current version.

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