solidbrush 255 255 0 roundrect 0 0 100 40 10 10 textcenter 50 10 Ampere DC label 10 10 + label 90 10 - solidpen 255 0 0 3 moveto -15 20 lineto 0 20 solidpen 0 0 255 3 moveto 100 20 lineto 115 20