question: public void processingInstruction ( String target , String data ) throws org . xml . sax . SAXException { if ( m_inEntityRef ) return ; flushPending ( ) ; if ( target . equals ( Result . PI_DISABLE_OUTPUT_ESCAPING ) ) { startNonEscaping ( ) ; } else if ( target . equals ( Result . PI_ENABLE_OUTPUT_ESCAPING ) ) { endNonEscaping ( ) ; } else { try { if ( m_elemContext . m_startTagOpen ) { closeStartTag ( ) ; m_elemContext . m_startTagOpen = false ; } else if ( m_needToCallStartDocument ) startDocumentInternal ( ) ; if ( shouldIndent ( ) ) indent ( ) ; final java . io . Writer writer = m_writer ; writer . write ( "<?" ) ; writer . write ( target ) ; if ( data . length ( ) > 0 && ! Character . isSpaceChar ( data . charAt ( 0 ) ) ) writer . write ( ' ' ) ; int indexOfQLT = data . indexOf ( "?>" ) ; if ( indexOfQLT >= 0 ) { if ( indexOfQLT > 0 ) { writer . write ( data . substring ( 0 , indexOfQLT ) ) ; } writer . write ( "? >" ) ; if ( ( indexOfQLT + 2 ) < data . length ( ) ) { writer . write ( data . substring ( indexOfQLT + 2 ) ) ; } } else { writer . write ( data ) ; } writer . write ( '?' ) ; writer . write ( '>' ) ; m_startNewLine = true ; } catch ( IOException e ) { throw new SAXException ( e ) ; } } if ( m_tracer != null ) super . fireEscapingEvent ( target , data ) ; }
target:  Receive notification of a processing instruction.