##$$=~^^..                                          ..^^~=$$##
##@#$$=~^.                                          .^~=$$#@##
##@#$$=~^.                                          .^~=$$#@##
##@#$$=~^.                                          .^~=$$#@##
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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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#$$$$~^...                                          ...^~$$$$#