itsme213 wrote:
>
> Juan, could even Right|Left|Above|Below be (the basis of) a co-ordinate 
> system?
>
>   
I don't know. 2 D coordinate systems convert between 2 D coordinates, 
i.e. pairs of numbers (as the usual x at y). What would be the meaning of 
coordinates in your system?

Cheers,
Juan Vuletich