No, there is no great difference. 'On' is just a sort of intensifier, in that it makes the action more 'active', more graphic. That's how it seems to me.
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Mister MicawberNo, there is no great difference. 'On' is just a sort of intensifier, in that it makes the action more 'active', more graphic. That's how it seems to me.Thank you for the answer.