@,@,,@,@,,                                          ,@@,@,@,@,
@,@,@@,@,@                                          @,@,@,@,@,
@,@,,@,@,@                                          @,@,@,@,@,
@,@,@@,@,@                                          @,@,@,@,@,
@,@,,@,@,@                                          @,@,@,@,@,
@,@,@@,@,@                                     ,    @,@,@,@,@,
@,@,,@,@,@                                        , @,@,@,@,@,
@,@,@@,@,@                                    , ~,  @,@,@,@,@,
@,@,,@,@,@ 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.)                 @,@,@,@,@,
@,@,,@,@,@                                          @,@,@,@,@,
@,@,@@,@,@                                          @,@,@,@,@,
@,@,,@,@,@                                          @,@,@,@,@,
@,@,@@,@,@                                          @,@,@,@,@,
@,@,,@,@,@                                          @,@,@,@,@,