Battle - Shows skill names, spell names, item names, class names if there are any, etc.
FF3 - Shows dialog script.
Credits - Shows the names of the developers in the intro scene and ending scene.
There's no real need to use any besides Battle probably, as the dialog script can be edited much easier with a utility. And the credits one probably isn't important to you, it is a little tricky to edit anyways, there's a more sophisticated way to go about the beginning credits (Magiteks walking through snow) anyway.
FF3 - Shows dialog script.
Credits - Shows the names of the developers in the intro scene and ending scene.
There's no real need to use any besides Battle probably, as the dialog script can be edited much easier with a utility. And the credits one probably isn't important to you, it is a little tricky to edit anyways, there's a more sophisticated way to go about the beginning credits (Magiteks walking through snow) anyway.
We are born, live, die and then do the same thing over again.