" <------------------------- sam066.txt ---------------------------->
  p # 2 3 5 7
  L # e # 3 4 R I 12
  L # x # 3 4 R 'ABCDEFGHIJKL'
" <--- Format, monadic --------------------------------------------->
  '-1.5' & . = F -1.5
  R F e
  x = F x
  4 1 F p
  8 -1 F p
)off