For vanilla demo specs we have UDS. For Boom and MBF ones there don't appear to be any publicly available docs*, and not everybody can read source code. Even those who can probably don't have it all neatly organized in a table in their heads, I imagine. So here's the first step towards rectifying this situation. Ideally, this should end up as a nice detailed Wiki article. Or maybe two or more, as it would be nice to have an in-depth comparison of technical differences between various complevels.