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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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