.......-~^                                          ^~-.......
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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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