Anticlockwise
Depends what underpinning body of knowledge you are referencing as your theory, I suppose and the context.
CAP413 or the a priori experiences of thousands of professional pilots and ATCers.
So I hypothesise that it would be theoretically incorrect to teach it to someone in the narrow context of passing an RT exam, but would be theoretically correct to explain it in the broader context of airways flying.
Ah, the epistomology of designing learning interventions
