a partition and wall system includes a partition with trim piece securely attached to a top edge and vertical side edges of the partition . one or both of the trim piece have a t - slot running along their length , to which accessories can be secured by use of t - fasteners that extend into the slot and engage blind surfaces at a bottom of the slot . the accessories include such things as screens , hooks , lights , panels , shelves , wire managers , utility - using devices , and the like , and can be easily arranged by office workers in optimal and customized arrangements , thus improving efficiency and adding function and value to the office arrangement .