@@,@,,,@,@                                          ,@,,@,@,@,
,@,@,,@@,,                                          ,@,@@,@,@,
@@,@,@,@,@                                          ,@,,@,@,@,
,@,@,@,@,@                                          ,@,@@,@,@,
@@,@,@,@,@                                          ,@,,@,@,@,
,@,@,@,@,@                                     ,    ,@,@@,@,@,
@@,@,@,@,@                                        , ,@,,@,@,@,
,@,@,@,@,@                                    , ,,  ,@,@@,@,@,
@@,@,@,@,@ GULL CALL.                    ,      , , ,@,,@,@,@,
,@,@,@,@,@ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ,@,@@,@,@,
@@,@,@,@,@                                          ,@,,@,@,@,
,@,@,@,@,@ THE SEAGULL  IS A  METAPHYSICS  TRICK; A ,@,@@,@,@,
@@,@,@,@,@ WORLD-BUILDER'S  SHORTCUT,  TO  DEFINE A ,@,,@,@,@,
,@,@,@,@,@ SECTION OF  REALITY AND  IMPLY ITS SIZE: ,@,@@,@,@,
@@,@,@,@,@ PLACE A  FLOCK OF  BIRDS AT THE EDGE AND ,@,,@,@,@,
,@,@,@,@,@ MAKE  THEIR  CALLS  TESSELATE  OVER  THE ,@,@@,@,@,
@@,@,@,@,@ ENTIRE VOLUME                            ,@,,@,@,@,
,@,@,@,@,@                                          ,@,@@,@,@,
@@,@,@,@,@ A SEAGULL  CAN BE  DEFINED BY  AS LITTLE ,@,,@,@,@,
,@,@,@,@,@ AS  FIVE  VERTICES;  SIX  TRIANGLES.  (I ,@,@@,@,@,
@@,@,@,@,@ WOULD  RECOMMEND  HANDLING IN SWARMS  OF ,@,,@,@,@,
,@,@,@,@,@ AT LEAST A DOZEN BIRDS.)                 ,@,@@,@,@,
@@,@,@,@,@                                          ,@,,@,@,@,
,@,@,@,@,@                                          ,@,@@,@,@,
@@,@,@,@,@                                          ,@,,@,@,@,
,@,@,@,@,@                                          ,@,@@,@,@,
@@,@,@,@,@                                          ,@,,@,@,@,