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.......#.. GULL CALL.                    .      . ~ .#......#.
........#. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ..#......#
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.#........ 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.)                 #...###...
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