" <------------------------- sam057.txt ---------------------------->
  p # 2 3 5 7
  L # e # 3 4 R I 12
  L # x # 3 4 R 'ABCDEFGHIJKL'
" <--- Shape ------------------------------------------------------->
  Rp
  Re
  R5
" <--- Reshape ----------------------------------------------------->
  12 R e
  0 R e
" <--- Ravel ------------------------------------------------------->
  , e
  R , 5
)off