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.
2. The device according to claim 1 , wherein the controller is configured to stop an editing of the first document, when the editing document is switched over from the first document to the second document.