* @param content
* RTF end bookmark keyword <b>\bkmend</b>.
* @throws IOException
*/
protected void endBookmark(String content) throws IOException {
RTFEndBookmark bookmark = new RTFEndBookmark();
if (startGroup != null) {
bookmark.addRTFString(startGroup);
startGroup = null;
}
bookmark.addRTFString(content);
getCurrentRTFElement().addRTFElement(bookmark);
lastRTFElement = bookmark;
}