You can use internalVar to get various directories and then modify it as needed or have some sort of settings file that is updated by the script and set by the user.
Do Modo deformers allow a non-destructive modeling? What kind of non-destructive stacked modifiers does Modo support and will this be improved in the future?
Thanks! I just released it http://www.mariussilaghi.com/radial_symmetry.htm. It is a c++ plugin modifier and it works in 3ds max 9 and above(32/64 bit)