.....~%###                                          ###%~.....
.:~†%%%##@                                          @##%%%†~:.
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.:~†%&#@##                                          ##@#&%†~:.
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...:~†††&@                                     .    @&†††~:...
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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.)                 ##@#&%†~:.
.:~†%&#@##                                          ##@#&%†~:.
....~%%&&#                                          #&&%%~....
.:~†%&####                                          ####&%†~:.
.:~†%&#@##                                          ##@#&%†~:.
.:~†%&#@##                                          ##@#&%†~:.