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I'm wondering why a revision is created when a post is locked, unlocked, protected, unprotected, etc...

What is the benefit of doing this?

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up vote 2 down vote accepted

It's not that a new revision is created—those records aren't numbered. Instead, they simply serve as records in the revision history so that members can see who took action on a particular post.

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thank you. Can you please explain what you mean by "those records aren't numbered"? – Mohamad Feb 20 '11 at 21:01
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@Mohamad If you look at this question, you'll see that the revisions are numbered on the left hand side, but the protection and unprotection aren't. – waiwai933 Feb 20 '11 at 21:12

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