I have been trying to dial down Compiz's stranglehold on my memory, and not keeping very good notes. I think all I did was reduce the texture quality in OpenGL, per Roland Taylor's suggestion. But I did something that left my scrollbars looking totally wonky. I tried to undo that by resetting Compiz to its default settings and now I have wonky looking scroll bars, I can't drag windows around, my windows have no decoration and I can't switch between applications except by pointing and clicking.
As it happens I have a terminal open and visible, and this browser window, but that's it. I was reading instructions on How can I reset compiz to the default settings? and
unity --reset doesn't work in 13.10 ("ERROR: the reset option is now depricated")
How do I restore compiz's defaults in 13.10?