| 摘要 |
A backward mouse is provided to enable a user to execute a previous page moving command and a page closing command directly without moving a mouse cursor to a corresponding position by installing buttons for two commands. A previous page button for directly executing a previous page moving command is installed to a right side of a mouse, and a page closing button for directly executing a page closing command is installed to a left side of the mouse. The previous page button and the page closing button are directly executed without making a user move a mouse cursor to a position corresponding to moving to a previous page or closing the page.
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