%%HP: T(3)A(R)F(.);
\<<
  IF DEPTH 0. ==
  THEN ML20NOW
  ELSE ML20CHK
  END
  IF 20. FC?
  THEN 3. DUPN
  END ML20FAC 1. - 7. MOD
  IF 20. FC?
  THEN 1. + ML20LTX SWAP GET 4. ROLLD ML20REQ \->TAG
  END
\>>