final SVGGElement showPts = new SVGGElement(doc);
final double thickness = shape.getThickness()/2.;
showPts.setAttribute(LNamespace.LATEXDRAW_NAMESPACE + ':' + LNamespace.XML_TYPE, LNamespace.XML_TYPE_SHOW_PTS);
showPts.appendChild(getShowPointsLine(doc, thickness, shape.getLineColour(), shape.getGravityCentre(),
shape.getStartPoint(), shape.getDashSepBlack(), shape.getDashSepWhite(), false, 1, 0));
showPts.appendChild(getShowPointsLine(doc, thickness, shape.getLineColour(), shape.getGravityCentre(),
shape.getEndPoint(), shape.getDashSepBlack(), shape.getDashSepWhite(), false, 1, 0));
return showPts;