private void appendCharacter(Document doc, Element parent, BxChunk chunk, Object... hints) {
Element node = doc.createElement("Character");
appendPropertyIfNotNull(doc, node, "CharacterID", chunk.getId());
appendBounds(doc, node, "CharacterCorners", chunk.getBounds(), hints);
appendPropertyIfNotNull(doc, node, "CharacterNext", chunk.getNextId());
appendProperty(doc, node, "GT_Text", chunk.toText());
parent.appendChild(node);
}