question: public void printComment ( Mark start , Mark stop , char [ ] chars ) { if ( start != null && stop != null ) { println ( "// from=" + start ) ; println ( "//   to=" + stop ) ; } if ( chars != null ) for ( int i = 0 ; i < chars . length ; ) { printin ( ) ; print ( "// " ) ; while ( chars [ i ] != '\n' && i < chars . length ) writer . print ( chars [ i ++ ] ) ; } }
target:  Print a standard comment for echo outputed chunk.