choose subsection of display for network to autolayout in

[studywolf]

I've noticed often i'll have a nice set up with graphs and all that going on in my model, and then i'll add in another node or ensemble or two and what started out as a nice autolayout graph that i zoomed out from is now all messed up. I could try zooming in to that section of the display and running autolayout, but that doesn't work well most of the time.

It would be nice if somehow there was a way to be like 'do an autolayout of the graph, but do it in this box that I just drew'