Just a heads-up: the documentation still refers to version 2.2, but the current version of the addon is 2.7
Shadow
Node removes shadows from the calculation for the cycle render and turns off visibility for the camera by leaving shadows.
Settings
Shadow – turns off shadows.
Camera – turns off visibility for the camera.
Simple Caustic – creates primitive fake caustics.
How to use
Left picture has the shadows turned off, the right is a regular glass.
