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.^-:::::^£ gull call.                    .      . ^ £^:::::-^.
.^-:^§£¶## ---------------------------------------- ##¶£§^:-^.
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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                            ££^^:::-^.
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.....-:§£¶ 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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