Today I received a question, which I found simple at first but then cost me a few hours to answer. "Can you visually show the joints as defined in AnyBody so we can make sense of the results?". Well a knee joint and a hip joint does not require any explanation. But latin names of the shoulder joints like glenohumeral, sternoclavicular, acromioclavicular etc. need some more explanation. So I ended up adding a simple code snippet to draw spheres at one of the nodes used in the joint definitions.