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Now, I am sorry for the slightly undescriptive title, as I have no way to possibly describe this, but how about a modification for a feature that should be in forums by default where you can 'extend' your topic in a way?

Sorry if this is a bit complex, but what I mean is that the topic creator should be able to add extra posts after his or her first posts but before any replies by other members, so they could extend any guides/articles in the topic without having to use edit posts. Sorry if this is not descriptive enough, it would just be something cool for modifications and even more useful if Jelsoft included it by default in vBulletin, as it would do away with edit posts forever.