Wikipedia:Tip of the day/December 4

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How to look at the changes to an article

Article version selection
Differences between two page versions
...and compare!

In the page history for any page, click "(last)" to see the changes for any version from the one just before it. To compare a series of versions, just click two radioboxes to select the set of versions, then click the "Compare selected vesions" button (this only works if you have JavaScript enabled). You should be presented with a screen that shows you which words have been removed and which ones have been added (affected words are highlighted in red). You always can revert to an earlier version by selecting it from the history, editing and saving it.

Read more: Wikipedia:Page history

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