Not from the book but more from experience. When I transfer an aircraft on a heading like; report your heading to XXX on 000.000 they sometimes correct their heading so it suits them better of even go on own navigation to an exotic point
Never had that happen when I said; report your radar heading to XXX on 000.000
So although it should not be used etc etc. It does help sometimes. Had a real nasty situation once when somebody turned direct although the correct phraseology was used. I know officially it is then pilot error but I rather use something different (that is real close) and have no situation at all.