Shape;
BoundingRectangle(1,1);

ChangePen(PEN_SOLID,9,RGB(0,0,255));

pt0.x = 0;
pt0.y = 0;

pt1.x = 2*grid;
pt1.y = 0;

pt2.x = left +2*grid;
pt2.y = bottom;

pt3.x = left;
pt3.y = bottom;

pt4.x = 0;
pt4.y = 0;

// 5 points
Polyline(5);
 