Thank you!
Good and useful informations.
I think that a cleaner job is possible if you
Hold down ALT key then "013" , release, and Hold down ALT key then "010"
to get CrLf.
I suppose that if you press only ALT+"010" you get only the LF character.
(CR is the ALT+"013")
A tip:
because this characters are invisible (at least with my version of MS Excel),
to be sure the field in the "Find & Replace" form is empty,
you can write a random word,
double click this word with the mouse
(it will select all the word, hopefully with the invisible characters included),
press DEL.
Now you can write CR LF...