To ignore a cell or region when running DRC/LVS

if a cell is not ready or a region where the design rule is violated, they can be ignored in the rule deck

     LAYOUT WINDEL 315 2638 384 2680 // ignore the rectangle region at (315, 2638) (384, 2680)

     EXCLUDE CELL "cell_name" // exclude the "cell_name"

     LVS BOX cell1 cell2 // treat cell1, cell2 as a black box, only check pin connection, not the inside netlist/layout of the cells. (useful for phantom cells or unfinished cells for doing LVS)