1.) Open the program

2.) Click the top-left icon that says "Open ROM" and browse your way to the rom you want to open (and open it)

3.) Check the field in the middle. Here you'll find all the text sorted into categories.

4.) Click on a "+" icon to expand a category and list its dialogues

5.) Click on a character-icon to display the text in the right field

6.) Edit it in the right field

7.) Click "Save text" to save your text

8.) You're done.

 :cookie:

Maybe something's wrong with the rom (tried myself, and my rom stops at route 101). Are you sure it's the original?

Advance text does not have does not have every text block in the game listed, you must search for it yourself, sorry.

(It would be kinda pointless to do so anyway, as the game gives you megabytes of freespace and tons of other space you can clear out to make room for your hacks scrips, data, etc.)