DATA PROCESSING DEVICE AND DATA PROCESSING METHOD

摘要

There is provided an undo technique having a high user-friendliness. In the lower portion of the screen displayed by a document processing device, an undo UI screen is displayed by an undo manager. The undo UI screen displays a time axis and a job history is displayed on the time axis. A slider is displayed on the time axis. When the slider is moved rightward and leftward by a user using a mouse, the job process is shown on the screen as if a moving picture were reproduced.