exactly. so you lightly butter your pan, base and sides. then you put the pan on top of a sheet of wax paper, trace the shape around the bottom of the pan with a pencil, cut out the wax paper and simply place it in the bottom of the pan. the butter will make it stick to the bottom so you can easily pour your batter in.
it has no effect on the mixture or the pan and its a guaranteed, no fuss, no muss cake removal method!