#$^^»»....                                          ....»»^^$#
##@#$%^»:.                                          .:»^%$#@##
#$$^^:....                                          ....:^^$$#
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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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#@##$%^»:.                                          .:»^%$##@#
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