it prob works on pc too

if you get the second notebook and keep tapping the screen you get teleported here

also when you do the thing this appears

and when you get the notebook on that dark map this appears

theres probably more to it but i didnt explore the map completely

i found how to get to the alt area on pc (i just spammed the shit out of my mouse on the first notebook)

ok so what i think is happening is that clicking a notebook  lot of times counts as multiple notebooks and if you spam,it counts as the out of bounds notebook