| 摘要 |
Upon reception of data updating information from a server apparatus ( 14 ) in a situation in which a presentation window is "closed" or "minimized" on a display unit ( 24 ) of each of terminal apparatuses ( 11 - 13 ), that presentation window is displayed on the display unit ( 24 ). The user who uses each of the terminal apparatuses ( 11 - 13 ) can always recognize a change in situation of the presentation system.
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