A method of controlling a mobile terminal including executing, via a controller of the mobile terminal, an application; displaying, via a display unit of the mobile terminal, a display screen including information output by the executing application; displaying, via the display unit, a memo writing window on the display screen including the information output by the executing application; receiving, via the controller, a memo written in the memo writing window; linking, via the controller, the written memo to the information displayed in the display screen when the memo was written in the memo writing window; storing, via a memory of the mobile terminal, the linked memo and information; and re-displaying the memo linked with the information on the display screen if the application is re-executed.