never heard of this before.
Isn’t it just a twist? It’s in the curriculum. or be more precise, a non-parallel change.
correct, but couldn find it in the text… able to let me know where it was mentioned? thanks
^ curious too, i thought it was twist too, but not sure
vol 3 p349, somewhere in the middle of the page.
thanks it states an “arbitrary nonparallel way”, but will remember this