A method of controlling a display of a data processing system includes displaying a first list as a scrollable view of items in a first mode; receiving an input to switch from the first mode to a second mode; and displaying, in the second mode, a representation of a command which when activated causes a displays of a second list of the items. Another method of controlling a display of a data processing system includes displaying in a first mode, a slider control which can be positioned in one of a plurality of positions to select a corresponding parameter; receiving an input to switch from the first mode to a second mode; and displaying, in the second mode, a representation of a command which when activated causes a-displays of a list of items corresponding to at least a subset of the plurality of parameters.