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