Functions Index :: D :: Dif2
Dif2(val x1, val x2)
Returns the difference of its arguments. 
v = Dif2(5, 3) # v == 2
w = Dif2(-5, 3) # v == -8
: The function is provided as a building block of more complex functions, particularly for operations on arrays. See the documentation of the array package and the ArrayOpFunc, ArrayOpArrayFunc and ArraySum functions.