code: public void ignorableWhitespace(char ch[], int start, int length)
  			throws SAXException {
  		if (isOutsideDocElem())
  			return; // avoid DOM006 Hierarchy request error
  
  		String s = new String(ch, start, length);
  
  		append(m_doc.createTextNode(s));
  	}
docs: Receive notification of ignorable whitespace in element content.
  
  <p>
  Validating Parsers must use this method to report each chunk of ignorable
  whitespace (see the W3C XML 1.0 recommendation, section 2.10):
  non-validating parsers may also use this method if they are capable of
  parsing and using content models.
  </p>
  
  <p>
  SAX parsers may return all contiguous whitespace in a single chunk, or
  they may split it into several chunks; however, all of the characters in
  any single event must come from the same external entity, so that the
  Locator provides useful information.
  </p>
  
  <p>
  The application must not attempt to read from the array outside of the
  specified range.
  </p>
  
  @param ch
  The characters from the XML document.
  @param start
  The start position in the array.
  @param length
  The number of characters to read from the array.
  @see #characters