Example systems and methods may allow for parallel operation of robotic devices within a workcell, such as industrial robots controlled to manufacture an output product. The easel can be used while mounted to the door it is stored on. In any the terrain, this invention allows the user to blend in without detection. The third well region has a higher impurity concentration than the second well region, and includes a top surface adjoining the metal-containing layer, and a bottom surface higher than bottom surfaces of the first and the second well regions. The muntin bar member and the covering material are brought into contact with each other to cause the covering material to overlie and adhere to the muntin bar member.