" <------------------------- sam054.txt ---------------------------->
" <--- Inner Product ----------------------------------------------->
  p # 2 3 5 7
  L # m # (I4) J.K I4
  m +.X m
  m +.X p
  p +.X m
  m &.= m
  m _.X m
  p X.* m
  m &.= 0 0 1 1
  p +.X 1
)off