Try something like this where Nickname, First and Last are names of your fields:
If ( IsEmpty ( Nickname ) ; First & " " & Last ; (Nickname & " " & Last))
Thanks Steve. This forum is so great, but I don't really know how to reply to you (and any readers).
Because I am not really posting a new answer .
You've replied in the correct manner.
We've long requested that "Post a new Answer" not say "Answer" but "Post Comment" or "Post Reply". They recently corrected the horribly ungrammatical "Post A Answer" to "Post a new Answer" but it still misleads users.
Right - it is a reply, not an answer in my case. You did nicely reply to my desparate request...Thanks again.
Post comment or post reply would be big improvement.