The computers in the numpad room display a different password each time you pause. Inputting these into the keyboard seems to have various effects.
Exiting the level from the pause menu while different passwords are displayed also seems to have various effects.
Its difficult to distinguish whats caused by inputting them, and whats caused by exiting, but it seems to open up the game for exploration A LOT:
206 days ago (+1)
Also waiting on the title screen for a bit seems to cause these things to appear from every window in the game. Both inside and outside.
UPDATE: This effect seems to be permanent and remains even after reloading the page/restarting the game.
UPDATE 2: This seems to be cause by pressing M on the keyboard in the computer room.
