nodes interface

I’ve always been curious about this. In a video tutorial I watched once, it shows the user click and drag the backdrop in the nodes window… How’d he do that?? I’ve tried every common move operation that I know, but to no avail. The dang thing is always dead center of the nodes window and it doesn’t seem to be movable… But he did so it has to be possible. The vid I saw this at can be seen here: it’s the “illuminating with blender nodes” tutorial.

It’d be nice to be able to move it, it’s always so annoying to have to see past all the nodes I have open. I bet the answer is really obvious too 0_o

Shift + Middle Mouse Button does the trick here… (Windows)
Midlle Mouse Button alone moves the rest.

Awesome, thnx a lot.