Where is the gridlayout code?

Hi,

I am suprised that is no Global grid layout on any other theme then Gridmarket.

Global grid layout code where exactly is it, is it in the themes or in marketpress plugin?

Could anyone just show or tell where the code is for a non code as i just like to look at it?

it seem very strange wpmu have not made it easy with global grid layout, as grid layout is a fundemental setup for products in stores.