I guess I didn't really consider it a must-have feature. I'm still not really sure why people want it but, eh, it's there now.

Pretty much easiest for debugging, as the runtime errors will report back line numbers, and it's quicker (and in my opinion, less cognitively intensive) to scan down the side of a panel than it is to fire up the "Go to line" feature.

A small thing, I know, but it does seem to make the difference when you've well absorbed in your task, and the scan down seems to add a broad sense of context to where you're looking.

Man, this was something I wanted the first time I opened DM. I am so happy to have it. Now, if only I had time to use DM.