I need to be able to predict the effects of an isotropic or partly anisotropic
(HF or PACE) etch of SiO2 with on a simple surface (a staircase of levels). Can
anyone recommend a way of doing this?

Thanks,
Justin.
Justin Mansell        | "The voyage will be a success only
1626 E. 115th St. #102| if the ships do not collide AND each
Cleveland, OH 44106   | ship is seaworthy."
(216) 754-1691        |             -C.S. Lewis on Morality