Screenshots

This shows the mode where both screens are used to show something higher than the bottom screen shows.  To beat this enemy, Link throws a bomb in the whirlwind and explodes up high on the enemy, knocking him to the ground.

Sailing returns, but it looks like it might be less tedious than the sailing in The Wind Waker.

To use the boomerang you can draw a line using the stylus and the boomerang will follow the path of that line.

You can also take notes on the map screen using the touch screen.

Link gets a clue.  Notice how the camera zooms in to a more traditional 3D angle.

Link gets ready to battle an enemy.

Link fights some rats.

Another zoomed in view that looks more 3D than the rest of the game.

Link causes some havoc outside.

Link opens a door.

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You draw this symbol on the door using the stylus to open it, the title of the game probably has something to do with this.....

The door before it's been opened...