A case against the x<>y key

[d b]

I seldom use the X<>Y in hand calculations but have used it in programs more. For instance entering N & E for a point together then the same for another point so as to use the distance formula (or R-P) on them. Surveyors call this inversing and we do it often. I let the program do the ordering and re-ordering and that uses X<>Y each go-around. BTW: the reason surveyors use programs to do something this simple is that we do do it a lot and sooner or later we all fat-finger a key. Data entry itself is enough of a chance for error to creep in.