I want to animate a model and asked myself what the skeleton should look like, so I googled a bit and found an image of the skeleton of a neverwinter nights 2 model. My question now is: Can anyone explain to me why this skeleton (http://www.crsponseller.com/images/nwn2/golem_ap_nodes.jpg) looks this way. It got bones which pointed outwards the model like the one starting from the model's right shoulder. The left shoulder didn't got one. What are this and the other weird bones for?