OUTPUTSTART

THE BOX'S MAIN HELP:

This box is part of a pair. This must eventually chain through to an 
'outputEnd' box in order to complete the loop.

X (output):

This is the normalized X coordinate of the image.
x location / x resolution

Y (output):

This is the normalized Y coordinate of the image.
y location / y resolution

C (output):

This is the returned color for the effected pixel.