1. A method comprising: presenting a graphical display to an operator on an operator station, the graphical display comprising an image associated with at least a portion of an industrial process, the graphical display also comprising a first set of icons associated with a corresponding set of process variables, the process variables associated with at least the portion of the process; wherein at least some of the icons in the first set include a first symbol representing a characteristic of a change of a first value of the associated process variable relative to a second value of the associated process variable.