joepal wrote:If there's a limited set of deformations, you can make a proxy for each.
But if you want to be able to make any possible combination of missing limbs (like left index finger and right arm below elbow both missing in the same toon) available from the UI, then that will quickly become cumbersome.
What do you mean with proxy? Thank you for explaining

Inside makehuman you model a human using the base mesh. However, for various reasons that mesh might be impractical for real use. So you can use a "proxy", a kind of paper doll, which is a mesh which roughly occupies the same space. This might be a mesh with a lot less vertex points of similar. See for example the discussion here:
viewtopic.php?f=15&t=12081Proxies are modeled as if they were clothes covering the whole body. Or in your case the body minus a chopped-off limb. This is done in the MakeClothes tool.
Documentation isn't extensive, but a starting point is here:
http://www.makehumancommunity.org/wiki/ ... a_proxy%3F