This is a drawing I did in an attempt to create a demonstration drawing for 1.23b. I recorded a script of this in 1.23b, but it does not play back all the way through, and it leaves out steps along the way. I also played it in 1.51, and it leaves out different steps along the way. (Bugs?)
1.23b: SketchSetup123b.zip
1.51:Skull_w_Setup.zip