To debug a messy material node setup in Cycles, I want to remove one link between certain nodes, then restore it when I'm done putzing around. Being absent-minded, I don't trust myself to remember.
Is there some easy way to turn off a link temporarily, making it as if it weren't there, without actually deleting it?
Whatever trick there is to do this, it should be visually obvious, so I can see that the link is disabled.
I'm using Cycles for materials right now, but I assume what I'm trying to do could apply to anything using a nodes editor.