Tutorial fixes and implementation of autosave to save16 and other updates Note that save 16 is automatically overwritten during sleep. ・When a field is released, an image guidance is added. ・Adjusted line break cursor design for text. ・Fade-in and fade-out expressions have been adjusted. ・A confirmation dialog box is now displayed when the Close button is pressed. ・Auto-save to save 16 function implemented. ・Improved winter graphics