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£%†~~..... 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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