Werner Exinger wrote:
A rather crazy idea which I would not recommend at all is to redefine the identity function at the top of the worksheet
Don't comment on the readibility of that worksheet ;-)
Sneaky. I like it, Werner.. 
Stuart
... until he wants to really define an identity 3, but then I suppose it would be easy enough to define identity3:=identity(3) before redefining identity or even use a difference math style for identity(3).