........,~                                          ~,........
.......,~:                                          :~,.......
......,~:%                                          %:~,......
.....,~:%$                                          $%:~,.....
....,~:%$¤                                          ¤$%:~,....
...,~:%$¤#                                     .    #¤$%:~,...
..,~:%$¤#@                                        . @#¤$%:~,..
.,~:%$¤#@#                                    . ,.  #@#¤$%:~,.
..,~:%$¤#@ 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.)                 #¤$%:~,...
..,~:%$¤#@                                          @#¤$%:~,..
.,~:%$¤#@#                                          #@#¤$%:~,.
..,~:%$¤#@                                          @#¤$%:~,..
...,~:%$¤#                                          #¤$%:~,...
....,~:%$¤                                          ¤$%:~,....