Sneaking

Sneaking is a feature introduced in Secret Saturday 1 (The week after Secret Friday 9). When you hold the Shift key you'll enter sneaking mode. Sneaking was originally called crouching, however your hitbox doesn't change from the normal standing height.

Sneaking has the following affects:
 * You walk slower.
 * You make no noise.
 * You can't fall off ledges.
 * You can't walk up stairs and steps, but you can walk down.
 * You won't trample crops.
 * The camera slightly lowers.
 * Mobs still notice you, no matter what.