The first of three nonogram collections by Altron.
BMP\SPRITE\LES_SP.TIM, which is unparsed by the game's executable, contains an earlier variant of one of the UI graphics seen in the Lesson Mode.
In BMP\SPRITE\LOGO_SP.BIN, there is another earlier UI graphic variant. However, the only difference is in the spelling of "Clear".
The file PSLG.BIN, present in the game disc's root, when played as Redbook audio, is revealed to be a higher-quality rendition of this game's title screen music.