# Possible to call “command codes” from LaTeX?

@ Next are the ordinary run-of-the-mill command codes.  Codes that are
|min_internal| or more represent internal quantities that might be
expanded by `\.{\\the}'.

@d char_num=16 {character specified numerically ( \.{\\char} )}
...

... and I would actually like to call this one:

@d remove_item=25 {nullify last item ( \.{\\unpenalty},
\.{\\unkern}, \.{\\unskip} )}

Is it possible to somehow call these "ordinary" "command codes" from LaTeX - and how might they be "expanded by \the"?

Edit: to clarify: above I see a "command" called remove_item which has some sort of a code of 25. Is it possible to call this command from LaTeX - maybe through \catcode25 (which doesn't work) or something similar (I'm speculating here: say, something like \cmd:remove_item)?

I don't understand the source code of Tex - but the way I read the above, there is an internal command remove_item in TeX, which apparently calls \unpenalty \unkern \unskip. I was hoping there is a way to call this remove_item from Latex...

-
I'm not sure I understand the question but perhaps the answer is \unpenalty and \the\lastpenalty –  David Carlisle Jun 28 '12 at 20:20
Thanks for the comment, @DavidCarlisle - I tried to clarify through an edit above, please let me know if I should clarify further. Cheers! –  sdaau Jun 28 '12 at 20:25
Oh so in that case the answer is simpler "no" :-) –  David Carlisle Jun 28 '12 at 20:40
Many thanks for that, @DavidCarlisle - would you mind posting that comment as an answer so I can accept it? –  sdaau Jun 28 '12 at 20:49