The following code is valid in at least 7 languages.

 (O/_/
 Cu  #%* )pop mark/CuG 4 def/# 2 def%%%%@@Pcob?    +Ex=
 CuG #%     2. Compile and/or run with appropriate compiler and          +Ex=
 CuG #%        operating system                                          +Ex=
 CuG #%                                                                  +Ex=
 CuG #%   Notes:                                                         +Ex=
 CuG #%     1. We have attempted to use only standard language features. +Ex=
 CuG #%        Without the -traditional flag gcc will issue a warning.   +Ex=
 CuG #%                                                                  +Ex=
 CuG #%     2. This text is a comment block in all seven languages.      +Ex=
 CuG #%                                                                  +Ex=
 CuG #%     3. When run as a .COM file with MS-DOS it makes certain      +Ex=
 CuG #%        (not unreasonable) assumptions about the contents of      +Ex=
 CuG #%        the registers.                                            +Ex=
 CuG #%                                                                  +Ex=
 CuG #%     4. When transfering from Unix to DOS make sure that a LF     +Ex=
 CuG #%        is correctly translated into a CR/LF.                     +Ex=
 CuG #%                                                                  +Ex=
 CuG #%   Please mail any comments, corrections or additions to          +Ex=
 CuG #%   peril@extro.ucc.su.oz.au                                       +Ex=
 CuG #%                                                                  +Ex=
 CuG #%------------------------------------------------------------------QuZ=
 CuG #%                                                                  +Ex=
 CuG #%!Mx)ExQX4ZPZ4SP5n#5X!)Ex+ExPQXH,B+ExP[-9Z-9Z)GA(W@'UTTER_XYZZY'CPK*+
 CuG #(*                                                                  (
 C   # /);                                                              /(
 C   # )  program        polyglot (output);                             (+
 C   #     identification division.
 C   #     program-id.    polyglot.
 C   #
 C   #     data           division.
 C   #     procedure      division.
 C   #
 C   # * ))cleartomark   /Bookman-Demi findfont 36 scalefont setfont     (
 C   # *                                                                 (
 C   #
 C   # *                  hello polyglots$
 C   #     main.
 C   #         perform
 C     * ) 2>_$$; echo   "hello polyglots"; rm _$$; exit
               print
 C             stop run.
      -,                'hello polyglots'
 C
 C         print.
 C             display   "hello polyglots".                              (
 C     /  int i;                                                        /
 C     /  main () {                                                     /
 C     /      i=printf ("hello polyglots\n"); O= &i; return O;         /
 C     )                                                                (
 C     *)  begin                                                         (
 C     *)      writeln  ('hello polyglots');                             (
 C     *)                                                                ( )
 C     * ) pop 60 360                                                    (
 C     * ) pop moveto    (hello polyglots) show                          (
 C     * ) pop showpage                                                  ((
 C     *)
            end                                                          .( )
 C)pop%     program       polyglot.                                      *){/}