The entry? VWR-5203, "Flexible Sculpted Prims". You can guess why it interests me... hair, of course. :)
Seriously: right now there's a patch to the client to support them, but because of how things are implemented, it's not very efficient, so some work is needed before flexible sculpted prims can be made official.
It already has 570 votes as I type this, but is still, alas, unassigned. I hope you will consider voting for it. (And while you're at it, don't forget VWR-1258.)