(*
 * A data matrix.
 *)
DEF B AS
   #<5 3 88  6 21  0  0 -7 
     5 2  1  4  8 10  1  4
     2 4  3  7  9  5  2  5
     1 3  3  5  7  2  3  6
     4 7  5  3  1  8  4  7
     8 9  7  1  6 12  5  8
    10 5  2  8 12  1  6  9
     1 2  3  4  5  6  1  2
     4 5  6  7  8  9  2  1>;

