@Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        StringBuilder buf = new StringBuilder();
        buf.append("Characters: \u201C");
        buf.append(ch, start, length);
        buf.append("\u201D.");
        warn(buf.toString());
    }
@see nu.validator.checker.Checker#characters(char[], int, int)
src/nu/validator/checker/DebugChecker.java