private void skipWhitespace() throws SAXException, IOException {
        // OK, do it the slow way.
        char c = readCh();
        while (isWhitespace(c)) {
            c = readCh();
        }
        unread(c);
    }
Skip whitespace characters.

<pre>
  [3] S ::= (#x20 | #x9 | #xd | #xa)+
</pre>
src/nu/validator/gnu/xml/aelfred2/XmlParser.java