Image Map, Blender, Wood,
Brick, Spots, Tile, Clouds, Marble, Granite, Math Function & Edge Blend
See the Color Nodes section for more information
Function Curve
Graphs values relative to time. Function curve points can be added,
removed and edited from the Timeline
palette, allowing for almost infinite control of values over time. To
edit a function curve, exit ShaderMaker and
open the Timeline palette. Expand
the current object. Locate the Shader
function curve group. Expand this item and you will find your newly
created function curve.

X/Y/Z - Current Point
(Local)
Returns the location, in local space, of the current pixel being rendered.