node editor Knife !

Just found this accidentally while using alt + ctrl + left mouse button drag to zoom in and out of the node editor.

if you use shif + ctrl + LMB drag you get a little knife pointer and you can draw straight lines to cut connections between nodes.   As I was trying to figure out what it was I accidentally sliced through  a bunch of connections by mistake.

its kinda cool though now that I know what it is.

-=s