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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 £=«.......
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..~~\===£@ 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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