1. A portable computing device comprising a touch-screen display, the device being configured to provide functions for editing workspace data objects, including functions for associating a first workspace data object with a first workspace service and for providing a workspace service editor for editing a second workspace data object, the second workspace data object being populated with at least some data from said first workspace data object according to the association of the first workspace data object with the first workspace service, characteristics of the association of the first workspace data object with the first workspace service being determined by touch-screen user input in a plurality of user interface configurations including: in a first user interface configuration, displaying selectable elements in a plurality of areas of said display, including a first display area in which at least one selectable element is displayed corresponding to a workspace data object and a second display area in which at least one selectable element is displayed for the selection of a workspace service; in a second user interface configuration, displaying at least one new selectable element, the at least one new selectable element being displayed in at least a part of at least one of said first display area and said second display area; in said first user interface configuration, receiving touch-screen user input to determine the at least one new selectable element; and in said second user interface configuration, receiving touch-screen user input to select said one new selectable element and to determine a characteristic of the second workspace data object.