xmldecl

Called when an XML PI is encountered in the document. EG: <?xml version=â1.0â encoding=âutfâ?> @p version the version attribute value. EG, â1.0â @p encoding the encoding attribute value, or nil. EG, âutfâ @p standalone the standalone attribute value, or nil. EG, nil @p spaced the declaration is followed by a line break