NUKE - create UV map

Paste this to make a flat UV map, for distortion/undistortion grids etc

set cut_paste_input [stack 0]
Expression {
expr0 (x+0.5)/(width)
expr1 (y+0.5)/(height)
name Expression1
selected true
}

Nuke stuff - basic shortcuts/hotkeys

shift-x to swap a/b 1/2 inputs.
ctrl-shift-x to detach from network
ctrl-shift drag onto, to replace node