Set the terms and messages that are displayed in-game. Checking the box next to an option will change it to the input text, but be aware that these may not display correctly if the text is too long.
Terms relating to basic statuses such as level, HP, etc.
Terms relating to parameters such as max HP, attack, etc.
Battle menu commands for fighting, escaping, etc., during battle as well as main menu commands for options, saving, etc.
General system messages for saving, loading, etc.
System messages for when in battle.