....:=:§¤§                                          §¤§:=:....
...:=:§¤§£                                          £§¤§:=:...
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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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....:=:§¤§                                          §¤§:=:....