| 摘要 |
A display unit displays at least a window from among a plurality of windows. A window switching unit switches a currently active window between windows among the plurality of windows in accordance with a corresponding voice-input, the voice-input comprising relationship command indicating a relationship between the currently active window and a window to be activated from the windows among the plurality of windows. The relationship command indicates a relationship concerning an arrangement of the plurality of windows, the relationship comprising a relationship between the currently active window and a window to be activated from the windows among the plurality of windows.
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