Sorry my late response.

Thanks, Mark, for the idea of simply turning the calc-field on and off – yes 
that is quicker.

Concerning the help-file: Yes, I know, and have tried, the suggested 
solution.  However, in my experience, there is just a short time before 
Windows will find out what I did, and overwrite the working help-file with 
the «correct» file, so that it won’t work anymore.  You don’t own your own 
things anymore.  Nowadays Microsoft has the last word on how I want my PC to 
behave.

To completely spin off from the original topic:  I have had a lot of use for 
Menkin’s Excel-library, but I’ve never given the Proview a try.  Is it worth 
having?  Is it better than what’s built into paradox?

Jostein