How do I link 2 text fields on a form

[PierceHawthorne]

I imported and combined 2 pdf forms. Both forms have some duplicate fields (eg. name, ID number, etc.). What can I do so that name only has to be entered once? Also, if one form has a separate field for first and last name, but the other only has 1 field for full name, is there a way I can combine the first and last to populate the full name field without having to do re-enter it?

[Thom Parker]

Yes and Yes, First, fields with the same name have the same value. 

Next, you can use a calculate script in the "FullName" field to concatonate the first and last name fields. 

However, this means that the user cannot enter the full name manually.