| 摘要 |
A method of managing a document presentation comprising presenting a document image to the audience on a display apparatus, positioning a timer image on the display apparatus so that the timer image overlays the document image at least partially, and so that the timer image is configured to be noticeably visible to the audience, selecting a timer count duration to match a preselected duration of an audience group activity, initiating a count of the timer, updating the timer image in accordance with the count.
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