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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: ¤¤†^~-....
.-~^†$¤£££ place a flock of  birds at  the edge and £££¤$†^~-.
.....~^$$£ make  their  calls  tesselate  over  the £$$^~.....
.-~^†$¤£££ entire volume                            £££¤$†^~-.
......-~†¤                                          ¤†~-......
.-~^†$¤£## a  seagull  can  be defined by as little ##£¤$†^~-.
.-~^†$¤£## as  five  vertices;  six  triangles.  (i ##£¤$†^~-.
.-~^†$¤### would  recommend handling in  swarms  of ###¤$†^~-.
.-~^†$¤£## at least a dozen birds.)                 ##£¤$†^~-.
.-~~^^^^$¤                                          ¤$^^^^~~-.
.-~^†$¤£##                                          ##£¤$†^~-.
.-~^†$¤£##                                          ##£¤$†^~-.
.-~^†$¤¤¤#                                          #¤¤¤$†^~-.
.......~†¤                                          ¤†~.......