Play (n.) lets a child be a steam engine in the game, which is not the same as our seeing him as one.
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Play (n.) counts as voluntary because of how a child reacts to the grown-up: laughter, sequence, faces; movements in such syndromes are called voluntary.
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A Play (n.) shows the contexts of a sentence best, so a quotation from a play is the best example of a sentence with a particular meaning.
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Play (n.) that treats a cut-out duck-rabbit as a doll, now one way and now another, shows treating a picture as a rabbit.
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Play (n.) is not learnt as voluntary or involuntary; what makes a movement a game is its character and surroundings.
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