摘要 |
Each time an execution of a function is demanded in each functional operation window at the undermost layer, a frequency of uses for the each functional operation window is recorded. In an operation menu window at each layer, when a selection operation for selecting a certain item is continued equal to or longer than a predetermined time, a display window is controlled to change to a functional operation window having the frequency of uses highest among functional operation windows selectable through the selected certain item based on the stored frequencies of uses. Thus, the functional operation window frequently used can be reached directly from the higher layered operation menu window, thereby simplifying the user's operation effectively.
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