Can you format data fields in a mail merge?

[AFN]

Sometimes my FirstName fields look like "john" instead of "John". Is
there an easy way to format the merge field so it capitalizes the first
letter of certain fields no matter what?

 

[Peter Jamieson]

Use Alt-F9 to reveal the field codes.

Then change, e.g.

{ MERGEFIELD FirstName }

to

{ MERGEFIELD FirstName \*Caps }

There are other such "switches" - they are documented in Word Help.