| 摘要 |
A plurality of display control portions display multiple text sets simultaneously on a display screen. Meanwhile, only one reading portion converts a text set into voice to be read out. When the reading portion is not reading out the text set, a request for changing a selected text set is accepted, and when it is reading out the text set, such a request is rejected. Further, the title of the text set which is selected to be read out is displayed on the display. Since only one reading portion is provided, the exclusive control for reading out the text set can be facilitated. In addition, it is possible to easily identify which text set among multiple text sets is read out because the title of the work which is currently read out is displayed.
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