It represents a ``processing instruction'', used in XML as a way to keep
processor-specific information in the text of the document. An example:
<?PI processing instruction?>
Here, ``PI'' is the target and ``processing instruction'' is the data.
METHODS
getTarget
The target of this processing instruction. XML defines this
as being the first token following the markup that begins the
processing instruction.
getData and setData (data)
The content of this processing instruction. This is from the
first non white space character after the target to the
character immediately preceding the ?>.
