The act of observing; perception.
A published critical review of a play or the like.
A written or printed announcement.
Advance notification of termination of employment, given by an employer to an employee or vice versa.
A formal notification or warning.
Prior notification.
To be noticeable; to show.
To become aware of; to observe.
The physics of light and vision.
Perception, image, public relations, especially in politics.
The light-related aspects of a device.