#......#.. ......####
..####...# .####..###
...##..#.. ..##....#.
##........ .....##...
...####### ####....#.
##..#####. . .##..##...
.....###.. . ........#.
####..#... . ^. #######...
.##.....## 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.) .######...
#..###..#. ..####..##
....#..... ...##....#
.##...###. ##....##..
....#..#.. ...##....#
.##....... ##....##..