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1.129.3 Point: arithmetic

* scale
Multiply the receiver by scale, which can be a Number or a Point


+ delta
Sum the receiver and delta, which can be a Number or a Point


- delta
Subtract delta, which can be a Number or a Point, from the receiver


/ scale
Divide the receiver by scale, which can be a Number or a Point, with no loss of precision


// scale
Divide the receiver by scale, which can be a Number or a Point, with truncation towards -infinity


abs
Answer a new point whose coordinates are the absolute values of the receiver's