needs copy and paste (and cut if easy) #8
Description
copy+paste would probably need to generate new code node IDs, otherwise we'd have duplicates. not sure what would work for cut, so we could leave that out.
similar to #7, it's possible to paste into a place where the variable references don't apply. also variable references work by UUID... so if it was referring to the same variable ID being pasted into a totally new context, that would probably not be good.