Hilary Stoupa finally provided the clues that I needed.
1. I was not aware, originally, that a print view was a screen that was modifiable.
It makes sense in the infopath structure..
2. A thought I had to add a control to an Expression box.
As the expression box seemed to ask for a control FIRST.
It wasn't until I tested one out that I realised that what you add was optional.
You could add a control, hard coded text,
or both, with the control first, I think, haven't tested that one yet!
I consider problem solved
thank you