SUBTRACT

THE BOX'S MAIN HELP:
This is the subtraction function.  The result is A - B.
A and B can be scalars, vectors, or colors.
The result will be a scalar if both A and B are scalars.
The result will be a vector if either A and B are vectors.
The result will be a color if either A and B are colors.
A type mis-match will result from the subtraction of 
vectors and colors.

A (input):
This is the value to be decreased.
The input may be a scalar, vector, or color.
However a type mis-match will result from the subtraction of 
vectors and colors.

B (input):
This is the decrement. The input may be a scalar, vector, or color.
However a type mis-match will result from the subtraction of 
vectors and colors.

OUT (output):
This is the subtraction function.  The result is A - B.
A and B can be scalars, vectors, or colors.
The result will be a scalar if both A and B are scalars.
The result will be a vector if either A and B are vectors.
The result will be a color if either A and B are colors.
A type mis-match will result from the subtraction of 
vectors and colors.

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