how can I render or see ragdoll bones??

hi all,
I need to fine adjust the collision bones of ragdolls, they are not rendered, but sizes are listed, ie; boneSize[0] = "0.2 0.2 0.7";

I need to actualy see these bones to tweak the sizes, there is/was a way to render, but I think debug render was removed from 1.2.9??

Yuri, or anyone, how can I render the bone boxes??