Author: ?

If you want to use the equivalent of TRACE on the 28, you can use
vectored ENTER to help you.

Enter the programs:

alphaENTER (25.5 bytes, #CA4Dh) [Get "alpha" by [blue][A] in alpha mode.]
\<< PR1 OBJ\-> \>>

and

betaENTER (118.5 bytes, #F6B1h) [Get "beta" by [blue][B] in alpha mode.]
\<<
  IF DUP "" ==
  THEN DROP "?"
  END 'KEY' \->TAG PR1 DROP
  IF DEPTH
  THEN DUP 1 \->TAG
  ELSE "[Empty Stack]"
  END PR1 DROP
\>>

Set flags -62 (user mode) and -63 (vectored ENTER). Make sure the output
is sent to the right device (IR or wire).

[Note: the correct way to write "alphaENTER" is "\GaENTER", but I left the
author's original text as it was.  -jkh-]