A mobile device comprising a display for displaying a plurality of icons, wherein the icons include at least one event icon that defines a specific event and at least one function icon that defines a function of the mobile device; means for manipulating the icons to allow a sequence of icons to be generated to form a block diagram that includes at least one event icon and at least one function icon, wherein the at least one event icon defines the event that causes the function associated with the at least one function icon to be performed; and means for converting the sequence of icons into a form that is executable by the mobile device.