START comment================================== Do approximation of your eye's on a TI graphic calculator and received your personal tierazon liscence for difference and estimation... My own tierazon eyes is on a tiger skin and is about perfect object... In the winter i may bio-math but i do not use it much those day since Pov cliche is on my back i will have to use the poc renderer again... humm quaternion reflecion on quaternion Have a good one if you wish===========================