HORIZONAL

THE BOX'S MAIN HELP:

This function returns a horizonal gradient.
U controls the direction.
SCL  scales the rate of the gradient.
OFF offsets the gradient.
FROM is the starting color.
TO is the ending color.

U (input):

This must be a varying float. 
This controls the direction of the gradient.

SCL (input):

This must be a float.  The default is 1.0.
This scales the rate of the gradient.

OFF (input):

This must be a float.  The default is 0.0.
This offsets the gradient.

FROM (input):

This must be a color.  The default is BLUE.
This is the starting color for the gradient.

TO (input):

This must be a color.  The default is WHITE.
This is the ending color for the gradient.

OUT (output):

This function generates a horizonal gradient.

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