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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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