7.5 White Space with SAX

• In a DTD-less XML document all the white space is significant
• In a XML document with a DTD some of the whitespace is potentially ignorable.
• A DTD tells where text is expected (i.e., PCDATA data type). Whitespace is ignorable where text is not expected (e.g., <br> </br>)
• Whitespace not attached to text is ignorable between elements
• The ContentHandler interface introduces the following method for tracking whitespace.
  • ignorableWhitespace(char[] ch, int start, int length)
• Ignorable whitespace allow formating of XML files to simplify human access