Even though you can look at the post to see if it's edited, it's usually quite overwhelming to check every post when processing pages of information manually.
How do you check if a post has been edited?
It is simple , move the mouse over the "publication date" :

The dots you see will come if the thread is edited. Anybody know how much time does the editing and posting be apart for showing the dotted line? I have made changes within a few minutes but it didn't appear. So edits after x hours or edits after 1 day make the dotted line show?
P.S. Sorry for bad english. Don't know how to ask this question correctly.

~~MZ~~