Aerobatics and the syllabus
Some years ago, pre JAA, the question of there being a specific Aerobatic Rating was raised at CAA Seminars. The CAA response at the time was to the effect that they had seriously considered such a rating but that it had proved impossible to define aerobatics in law so the idea was dropped.
Spinning is Ex 11 but Aerobatics is Ex 21 in the syllabus. The RAF nearly always include aerobatics as part of their 'air experience flight' to cadets.