target: DOMString
Returns the target portion of this processing instruction. The target is the first whitespace-delimited token within the processing-instruction block.
Processing instructions are meant to embed
application-specific instructions for automatic content
generation, parsing, etc., within the XML stream. The
instruction's target
portion is
the flag that allows different processing applications to coexist.
Applications that use processing instructions for formatting
should ignore processing instructions they do not
recognize.