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Possible Duplicate:
What is a 'rollback'?

I don't understand meaning of first roll back badges. When I move cursor on CleanUp badge it
shows message "First Rollback". What the meaning of this? is we done some action and again
undone?

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marked as duplicate by Lix, BoltClock's a Unicorn Apr 17 '12 at 11:39

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

3 Answers 3

Rolling back a post means that you return it to a previous version.

If there were some edits made to add information to a post that after some clarification are not needed, instead of editing the post again to remove the added information, one could simply "roll back" the post to a previous version.

When you are viewing the edit history of a post, you can see the "rollback" link as shown in the screenshot below.

enter image description here

That is pretty much the explanation of what a rollback is. With regard to how to earn the "clean up" badge, you can see the possible duplicate link at the top of your post or inspect @alphamale's answer.

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How do I v view the edit history of a post? –  Reccur Nishan Sep 29 '13 at 10:02

Rollback is happened when somebody or you edits your post and you discard that change and roll it back to its previous state. It also remove any offensive flags that have been set on a question.

A rollback involves using a command that is called "Rollback". It shows up when a post that you have edited has the most recent revision by another user. Rolling back will return the post to the last revision that you had made to the post. It requires edit permissions on other people's posts, but is always available on your own posts. For example, I have just edited your post. You should now have an option to "rollback" in the same area that you can flag or edit.

It can also be achieved on a post by rolling back to any revision, by accessing the revision history of a post that has multiple revisions (when you have edit privileges). The option "rollback" can be used to revert to any specific revision, and this qualifies for the badge as well. You can see this here on one of your own questions.

EDIT:

Once a post has been edited, it could be rolled back by anyone with edit permissions for that post to a previous revision. The rollback button appears on the edit page after an initial edit has been made. Note this excludes edits that do not cause a revision history (edits by the OP made very shortly after posting).

You can refer to this question:

What is a 'rollback'?

How can I get the “cleanup” badge

Hope this helps.

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Doesn't have to be an edit by someone else. It can be your own edits as well... –  Lix Apr 17 '12 at 11:34
    
Same thing... I meant edit history, whether by one himself or by someone else. –  AlphaMale Apr 17 '12 at 11:38
    
I think you need to re-word your answer as it is a bit misleading... It does not have to be an edit by someone else and it doesn't even have to be your own post. Once you have the edit privilege you can even rollback other users posts. –  Lix Apr 17 '12 at 11:40
    
updated, thats what i meant. –  AlphaMale Apr 17 '12 at 11:44

For rollback first click on the edited as i circled it in image enter image description here

Then click on rollback

enter image description here

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