The methodology for adding the text names is the same across all three incarnations of the AR8200. You don't say which version you bought but if not a MkIII then the older manual (eg. AOR AR8200 MK III) might be better for you.
On the AR8200 yahoo group there should be copies of a quick reference guide I wrote many years ago. Smallest version is designed to fit onto a credit card size laminate.