Abstract: An electronic layout system for use with a fabrication table utilizes a plurality of visible display elements mounted on display modules which are linked to a host computer to facilitate the assembly of panels for the panelized or modular production of housing. The display modules are mounted on the fabrication table and in accordance with commands transmitted from the computer, the visible display elements form a coded image of the various types of structural members in a panel as well as their longitudinal and lateral positions within the panel. An operator is able to align the specific structural member with its coded image and assemble the panel on the table, then he may continue production of the same panel or select a new panel.