I think it depends on the person using the diagram, the thread choice
and whatever lace it is ;)
I like to see twists marked that aren't part of our usual bobbin lace stitches!
I can choose not to do them, or add more or less as it works out. If
the markings aren't there to remind me - I forget.
W
> I recently took a class where
> the teacher said she doesn't mark the twists. This creates
> confusion.
Drawing twists makes a diagram more error prone. Better no marks than wrong
marks. So it is better to teach them by mouth in those situations they don't
come natural with your level of under