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.........~ 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.)                 ^†»~......
.......~»†                                          †»~.......
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.........~                                          ~.........
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