In Nuke if you select a node and hit 1, then select a different node and hit 2, afterwards you can “a - b” between them by setting the focus to the viewer and then pressing 1 and 2 (or any of the number keys) and it will just flip between them.
In natron this creates a wipe, which I don’t want. I can’t find a way to just flip between inputs, how do you do that?