Go to the elevator, close the door, and press the button to go into the tower. The paintings next to the bookcase open and close the secret passageway behind it. There are 4 'red' positions, each one of them corresponding to where one of the 4 available link books is hidden (ship, giant tree, gears, spaceship). Grab the tower and rotate it until it flashes red, then stop. Each of the marker switches in the island lights one specific group of buildings in the map. Jot down any interesting diagrams from the others on your notebook. You can ignore the book with the weird squares in it, you'll deal with it later. Read the 4 legible books in the bookcase.

Give the blue and red pages to the corresponding books. In the library, each wall contains interesting items. Turn back to the projector, push the button, and watch the man's message to Catherine. Enter the number of switches '08', and press the button to close the panel. Press the green button on the upper left corner, which will reveal a hidden Control Panel. You'll notice a piece of paper on the wall to the left. Go to the projector, and turn it off by pressing the big button at the bottom. In the pier, there is an entrance to an underground room. Worry about the clock tower marker later. As you explore the island, you'll find that there are 8 marker switches in total: Pier - Giant gears - Planetarium - Spaceship - Mall with small pool and pillars - Brick building - Wooden shack - Clock tower Turn each marker switch on (up) as you get to it. Pick up the note in front of the planetarium.

Myst switch