any ideas on sumation, as it is a very useful tool. the symbol sigma has a maxium at the top, and a minium starting point at the bottom, followed by an equation. (the sum of an arguement from x to y ). vaghVaD wa'vo' boq'qa'lI' 'ay', 'ay' ghoHmeH 'op mI' boq wa', cha'maH chenbogh