There are a handful of windlight settings (although I have not yet gone through all of the ones provided in the Singularity viewer, but there are TONS!) that I enjoy using on a semi-regular basis but have to scroll through a long list to find them, if I remember their names at all.  Is there a way to delete windlight settings that I won't use or, better yet, (and possibly wishful thinking) a way to organize my favorites?