are not all valid. In this case we defer
the rendering until they are all valid.
*/
public void render(PageSequence pageSequence)
throws SAXException {
AreaTree a = new AreaTree(this);
a.setFontInfo(fontInfo);
for(Enumeration e = extensions.elements(); e.hasMoreElements(); ) {
ExtensionObj ext = (ExtensionObj)e.nextElement();
try {
ext.format(a);