When reading a quoted a message, one often wants to go and read the original message in order to get the context of the posts around it.
XenForo enhances this functionality by detecting whether or not the quoted message is on the same page as the one you are viewing, and animating a move from the quote to the original message, so you get an idea of how many messages are inbetween the two and other visual cues.
You can see it in action here:
http://xenforo.com/community/posts/1107/
Click the little up arrow on that post, after 'Kier Said' to see the effect.
XenForo enhances this functionality by detecting whether or not the quoted message is on the same page as the one you are viewing, and animating a move from the quote to the original message, so you get an idea of how many messages are inbetween the two and other visual cues.
You can see it in action here:
http://xenforo.com/community/posts/1107/
Click the little up arrow on that post, after 'Kier Said' to see the effect.