Don't.
R1C1 is far better than A1.
Relative formulas in A1 change depending on the cell you are on. R1C1
formulas do not change. It makes them easy to validate that a range of
formulas are the same.
Also, when I read these two formulas - "=R[-1]C*0.1" & "=F6*0.1" - I can
immedaitely tell that the first one is looking at the cell immediately above
the current one. The second formula could be pointing to any cell - I need to
know which cell I'm on to know whether it is right. Painful.
Also, how painful is the "A$1" stuff?
James.