A roll for smoothing a web, a process for making the roll and a process of repairing the roll. Also included are one or more portable units having housings in the shape of aesthetically-pleasing structures. Such coherent scattering is achieved by placing the entities in a resonator containing in which the cavity length and mirror coating are selected to support a resonant radiation. Coupled to the processor is an user-controlled input device used to select at least one of the plurality of display-formatted data sets for output to the display.