[thetoof]

Yup, forgot to add vinverse... but as you said it's easy to find the plugin. The vinverse script is actually where vinverse was originally thought, but I recommend getting the actual plugin by tritical instead.
VinverseD is a function included in mcbob, so it is part of requirement package. I made it possible to use both because vinverseD is stronger (and slower), so it might be useful for very tricky sources.