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++]);
  }
}

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 ++ ] ) ; } }
print a standard comment for echo outputed chunk .
