,,@@,,@@,@                                          @@@,,@@,,@
,@,@,@,@,@                                          ,@@,@,@,@@
,@,@,@,@,@                                          ,,@,@,@,,@
,@,@,@,@,@                                          ,@@,@,@,@@
,@,@,@,@,@                                          ,,@,@,@,,@
,@,@,@,@,@                                     ,    ,@@,@,@,@@
,@,@,@,@,@                                        , ,,@,@,@,,@
,@,@,@,@,@                                    , -,  ,@@,@,@,@@
,@,@,@,@,@ 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.)                 ,@@,@,@,@@
,@,@,@,@,@                                          ,,@,@,@,,@
,@,@,@,@,@                                          ,@@,@,@,@@
,@,@,@,@,@                                          ,,@,@,@,,@
,@,@,@,@,@                                          ,@@,@,@,@@
,@,@,@,@,@                                          ,,@,@,@,,@