A method, apparatus, and system to concurrently render independent images for display on one or more display devices. The method includes receiving constraints from a user, wherein the constraints include desired test conditions, desired tolerances for the desired test conditions, and desired instrument. When the cliche for offset printing of the present invention is used, line width reductions generated around the intersection units during mesh pattern printing may be reduced. From the journey data in the journey database, journey patterns for the single user are extracted. Portions of the control signal can be sent through the output lines of the first processor to the plurality of second processors at substantially the same time.