The Ramp TOP is a generator for color gradients. We learn how to drive the resolution from the parent components custom parameters with a Python exprission ( parent().par.w ). Also we see that a Ramp TOP itself is driven by a simple table.
We use a Composite TOP to play with different ways to blend images/textures and filter the result with a Monochrome TOP and a Level TOP. With an Out TOP we create an outlet on the parent component and we learn how display this texture in the parents viewer.