While body modification has become mainstream, this documentary sounds a note of caution for those thinking about piercing, expanding or otherwise changing their appearance.

And yet big challenges lie ahead - and previous presidencies offer a note of caution.

Just one note of caution - if in doubt about your fitness, please check with a doctor before embarking on our exercise programme.

Yet it is worth sounding a note of caution.

But she sounds a note of caution for other writers thinking of taking their creativity to the law.