An example of MathML just to show that standards can be created that are more advanced than commercial browsers can keep up with.
To view this you will probably need a copy of Amaya from the W3C; click here <Amaya Home<> to get it.
If you're using M$ IE 4 then the lines below here will be very similar to those above and that is not correct:
a = Σ i = 0 i = 10 x i 3
a = Σ x i 3 i = 1 i = 10