The general idea of this is that he's using a different sprite for each textbox. For example, "Where is the smoked cheese?" would be one sprite, then "Nyoron~" is another sprite entirely. Whenever you want to make a new textbox, you go in and make a new sprite with the new text.
@Vipershark, he probably just typed it that way since that's the exact name of his file.
@Vipershark, he probably just typed it that way since that's the exact name of his file.