Profile starting with 0 at the snow surface
Comment from Canada: It would be nice to be able to specify a profile with 0 at the snow surface and positive depths indicating the height below the surface. This format is commonly used in N. America for test profiles. Actually, I discovered you can draw a profile with 0 at the snow surface if you use negative numbers for the depth of the layer boundaries, but this will not be intuitive for the majority of users. An option to set 0 at the snow surface or 0 at the ground would be better.