Follow Nodes On Curve in New Area

I've come across this a couple of times recently. There will be a detailed curve describing a building or wall with 20-50+ nodes describing it. I'd like to attach an area to another detailed one, e.g. a park that starts next to a really curvy wall. I'd prefer not to have to find 50 closely packed nodes and click 50 times. Is there a keyboard shortcut that will add the next node in a new area to be shared with the next node in an existing area? I instinctively tried using the arrow key pointing toward the next node, but sadly that didn't work. I see a mention of using 'f' in the Potlach editor, but I'd prefer not to have to use Flash.