The name of the current property.

Can be one of the following values: * AGE * ATTACHED * AXIS * BITES * CHECK_DECAY * COLOR * CONDITIONAL * CONTENTS * DAMAGE * DECAYABLE * DELAY * DISARMED * DOWN * EAST * ENABLED * EXPLODE * EXTENDED * EYE * FACING * HALF * HAS_BOTTLE_0 * HAS_BOTTLE_1 * HAS_BOTTLE_2 * HAS_RECORD * HINGE * IN_WALL * LAYERS * LEGACY_DATA * LEVEL * LOCKED * MODE * MOISTURE * NODROP * NORTH * OCCUPIED * OPEN * PART * POWER * POWERED * ROTATION * SEAMLESS * SHAPE * SHORT * SNOWY * SOUTH * STAGE * TRIGGERED * TYPE * UP * VARIANT * WEST * WET