Someone who views a spectacle; an onlooker or spectator.
The manager of a colliery, who directs its workings and ventilation.
Someone who watches television.
Any optical device used to view photographic slides.
A program that displays the contents of a file.
A viewing window.
A typically rectangular region representing the range or area currently visible (within a window, screen, etc.).
To clip (an image or region) so that it fits in a viewport.