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#.##...#.#                speed hole                ##.##.#...
##.#..####                *****.****                .##.###..#
.###.#....                                          #.##..#.#.
#..###.... turn your  walkman like a turtle.  there ##.#.####.
#.#..#...# might  be  something  there  that  looks .####...##
###.##..#. like a  screw  hole  but it  could  be a #...#..#..
..##.#.##.               speed hole.                #..##.##.#
.#.####.## the  rule   is   if  you  can't   get  a #.#.##.###
###...##..  reasonably small screwdriver in there,  ####.##..#
..#..#.#..          it's not a screw hole.          ...##.#.#.
.##.####..                                          ..#.#####.
#.##...#.#                 # usage #                .###....#.
##.#..###.                                          #..#...###
.###.#..## use  the speed hole  like a  screw  hole #.##..#...
#..###.#.#      but with a tinier screwdriver       ##.#.##...
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###.#.....                 @ this @                 #...###.#.
..###....#               ¶ adjusts ¶                #..#..####
.#..#...#.                  # the #                 #.##.#...#
##.##..##.               .# pitch #.                ##.###..##
.##.#.#.##                                          .##..#.#..
#.######.. some cassette players have  speed screws #.#.####..
##.....#.# but  no holes for them.  to get to those ####...#.#
.#....#### screws  you  need  to   dissasemble  the ...#..###.
##...#...# whole   thing.   could   be   worth   it ..##.#..#.
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