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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 ......«:%¤
#¤$$$%:«~. at least a dozen birds.)                 .~«:%$$$¤#
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