private void addComment(String comment) {
		if (page == null || comment == null || comment.isEmpty())
			return;
		
		MetaData metadata = page.getMetaData();
		if (metadata != null) {
			String comments = metadata.getComments();
			if (comments == null)
				comments = "";
			if (!comments.isEmpty())
				comments += "\r\n";
			comments += comment;
			metadata.setComments(comments);
		}
	}