How do you edit posts?

I’ve seen “last edited by” on some posts lately, but I didn’t know that was possible. How do you edit posts?

Thanks!

Click the “Edit” link whenever you are reviewing a post you wrote. You can only edit the post for up to 20 minutes after you posted it. A moderator can edit your post at any time.

Speaking of that, why is there a 20 minute limit on edits? It seems so odd…

They only do that so people are editing their posts three days from now and disrupting the flow of the topic.

We keep the editing time short to let members fix typos & formatting errors, but not change what they said after other members have replied. (That happens on some forums.)