XML::Parser Methods

XML::Parser offers 2 main methods::

parse( $string): parse the string, alternatively $string can be an open file handle
parsefile( $filenale): parse the file

XML::Parser::Expat Methods

those methods can be called from any handler:

Method	Return value
`depth`	the current depth in the tree during parsing
`in_element( $gi)`	true if the current element is `$gi`
`within_element( $gi)`	the number of times `$gi` appears in the current context list
`recognized_string`	the UTF-8 encoded string recognized by the parser
`original_string`	the original string recognized by the parser