private final void insert(Object text){
  buf.insert(buf.length() - 1," ");
  buf.insert(buf.length() - 1,text);
}

private final void insert ( Object text ) { buf . insert ( buf . length ( ) - 1 , " " ) ; buf . insert ( buf . length ( ) - 1 , text ) ; }
splices additional information for a node into the buffer .
