rect .nf .IS ...maxx 5.5 ...maxy 0.25 ...minx 4 ...miny -1.5 ...spline 5.5 -1 ...knot 5.35 -1.5 ...knot 4 -1 ...knot 4.1 -1.5 ...knot 5.5 0 ...knot 5.35 0.25 ...knot 4 0 ...knot 4.1 0.25 ...endspline ...line 4 -1 4 0 ...line 4 0 5.5 0 ...line 5.5 0 5.5 -1 ...line 5.5 -1 4 -1 ...line 4.1 -1.5 4.1 -1 ...line 4.1 1.49012e-08 4.1 0.25 ...line 4.1 0.25 5.35 0.25 ...line 5.35 0.25 5.35 -1.11759e-08 ...line 5.35 -1 5.35 -1.5 ...line 5.35 -1.5 4.1 -1.5 .IE