Most of this worked quite efficiently (although it took me an age to get the knack of making the music beam to the speaker).

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While most of you would indeed likely get the knack of it pretty quickly, you'll no doubt have a significantly harder time actually getting your hands one of 'em.

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It can take a bit to get the mobile cloud-printing knack, but once you do, you will never go back to carrying a pile of business cards.

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Owais Shah has always looked more comfortable at number six to me - he has the knack of hitting the ball in unusual places - and it has to be sensible to get Pietersen at the fall of the first wicket.

BBC: Jonathan Agnew column