1. A device, comprising: a single touch-screen display configured to display a virtual keyboard and a document area displaying an editing document inputted via the virtual keyboard; and a controller configured to maintain displaying of the virtual keyboard on the single touch-screen display while switching the editing document over from a first document to a second document in a case in which a touch operation to switch the editing document over from the first document to the second document is performed in the document area displayed on the single touch-screen display, wherein in the case in which the touch operation to switch the editing document over from the first document to the second document is performed, the controller is configured to cause the single touch-screen display to display that the first document displayed in the document area moves in a direction of the touch operation, and cause the single touch-screen display to display, without superimposing on the virtual keyboard, an indication confirming whether the first document should be stored.
9. The device according to claim 1 , wherein, in a state where two documents are currently edited, when the touch operation is performed in a first direction, the controller is configured to switch a displayed document in the document area from one of the two documents to the other document, and when the touch operation is performed in a second direction different from the first direction, the controller is configured to switch over from the displayed document to a new document.