| 摘要 |
In one embodiment, a practice includes a display device, a first controller, an input device and a second controller. The first controller, which controls the display device by displaying an input interface image in the first display area of the display device. The second controller, which controls the display device by playback a dynamic image representing a cue event indicating a cue of the operation in the second display area of the display device, or by continuously displaying a plurality of still images including an image related to a cue event. The second controller stops the playback of the dynamic image or the continuous display of the still images during the period from the moment an image related to a cue event is displayed to the moment an operation is input through the input device that is to be carried out by taking the cue event as a cue.
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