To browse the pictures of your slideshow use 'L' and 'R' keys on your Gameboy.
Hold 'A' while pressing 'L' or 'R' to skip 10 pictures
Hold 'B' while pressing 'L' or 'R' to skip 100 pictures
Press 'A'+'B' to jump to a random picture
Hold Start and press Select to reset or to exit to Pogoshell
Press Select to bring up a simple help screen
Hold Start and press 'R' to start slideshow mode
Hold Start and press 'L' to switch to thumbnails mode
In thumbnails mode use pad to move cursor, 'L' & 'R' to skip a page and 'A'
to select a picture.
Hold 'A' and Press Pad Up and Down to adjust brightness
Hold 'A' and Press Pad Right to zoom zoomable pictures, then use pad to scroll
Hold 'A' and Press Pad Left to to bring up the options panel