7 Symbols

  0  open square                16 filled square
  1  dot                        17 filled circle
  2  cross                      18 filled five-point star
  3  asterisk                   19 larger open square
  4  open circle                20 very small open circle
  5  diagonal cross             21           ^
  6  open square                22           |
  7  open triangle              23    open circles of
  8  open circle with cross     24    increasing size
  9  open circle with dot       25           |
  10 open 'pin-cushion'         26           v
  11 open diamond               27 very large open circle
  12 open five-point star       28 left arrow
  13 filled triangle            29 right arrow
  14 open cross                 30 up arrow
  15 open six-point star        31 down arrow
       32-127  the corresponding ASCII character