While there is this question with a very similar title, it does not answer my question, which is:
I have part of an input, in my case
which Mathematica "simplifies" to
So I am wondering how to tell Mathematica to leave this expression, whether it's alone or part of a longer formula, in its previous form rather than to change it as shown here.
I should probably add I am still running version 6, hoping this is not causing the issue.