Computes
-d delay one (1)
-D delay two (2x delay one)
-l number of points (whole file)
-x number of values to be skipped (0)
-c column to be read (1 or file,#)
-h show this message
_ _ _ < (y - y)*(y - y)*(y - y) > n n-d n-D -------------------------------- _ 3 < (y - y) > n