svg.getSVGDescriptionClassOrSVGAnimationClassOrSVGStructureClass().add(line);
line.setX1(b.getOffset().getXAsString() );
line.setY1(b.getOffset().getYAsString() );
Point otherEnd = b.getOtherCorner();
line.setX2( otherEnd.getXAsString() );
line.setY2( otherEnd.getYAsString() );
line.setStyle("stroke:rgb(99,99,99)");
// You can't see the line in Midori, unless you specify the color.
// width eg stroke-width:2 is optional