Telltale sensation experienced by some people with epilepsy before a seizure.
An invisible force surrounding a living creature.
Perceptual disturbance experienced by some migraine sufferers before a migraine headache.
Distinctive atmosphere or quality associated with something.
The application the user is currently interacting with; the application window that appears in front of all others.
The elements of an image which lie closest to the picture plane.
The subject of an image, often depicted at the bottom in a two-dimensional work.
To place in the foreground (physically or metaphorically).