It looks like when you weld control points Shift+Weld vs Weld (right click while holding the left mouse button on PC, or a ~ click on mac) the behaviors are different.
It looks like Welding the ends of a spline together joins the spline, making one spline, while Shift+weld seems to attach them, but they don't form one smooth spline.
Can someone point me to documentation that explains this better. The book also mentions something about spline direction, which I can't seem to find information about either.
I've looked at the basic splinesmanship web pages, and they are great, but also dated. Also, in an attempt to force me to do things rather than just see what's going on, the basic splinesmanship page sometimes gives instructions without a 'completed example'.
So what is the difference between using A and Shift A to add control points? When I do it, I don't see any difference on my model, but the tutorial indicates there is one, but *I'm never told what*.
Its maddening really. But I promise to read all documentation that I'm pointed to, and I will document any anecdotal knowledge so that this becomes easier for everyone. It seems like a lot of problems come down to splinesmanship, and I'd like to beef up our collective knowledge in this area, if I'm not the only one having trouble.