In particular, this experiment ended once the respondent clicked on the link.

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Links sent in this way can only be clicked once.

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Once you have clicked on a Play icon on a picture - or on the Player controls - then you can start, pause or restart the video by using the control buttons immediately below the video screen.

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However, once her first serve clicked into gear, the Frenchwoman's confidence grew and the crowd sooned warmed to her bold, attacking game.

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Danny Lennon's side have struggled in front of goal all season but once McGowan made the early breakthrough in the replay the visitors clicked in the final third.

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