,:~/%$@###                                          ###@$%/~:,
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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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,,,,:~//$#                                          #$//~:,,,,