.....-~†$@                                          @$†~-.....
......-~†$                                          $†~-......
.......-~†                                          †~-.......
........-~                                          ~-........
.........-                                          -.........
..........                                     .    ..........
..........                                        . ..........
..........                                    . -.  ..........
.......... gull call.                    .      . - ..........
.......... ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ..........
..........                                          ..........
.......... the  seagull is  a metaphysics trick;  a ..........
.......... world-builder's  shortcut,  to define  a ..........
.......... section of reality  and imply its  size: ..........
.........- place a flock of birds  at  the edge and -.........
........-~ make  their  calls  tesselate  over  the ~-........
.......-~† entire volume                            †~-.......
......-~†$                                          $†~-......
.....-~†$@ 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.)                 ###@$†~-..
.-~†$@####                                          ####@$†~-.
..-~†$@###                                          ###@$†~-..
...-~†$@##                                          ##@$†~-...
....-~†$@#                                          #@$†~-....
.....-~†$@                                          @$†~-.....