To work with an application, you need to give the focus to its window. When a window has focus, any actions such as mouse clicks, typing text, or keyboard shortcuts, are directed to the application in that window. Only one window can have focus at a time. The window that has focus will appear on top of other windows, so nothing covers any part of it. It may also have a different appearance from other windows, depending on your choice of theme.
Aplikazio batekin lan egiteko, aplikazio horren leihoari fokua eman behar diozu. Leiho batek fokua duenean, leiho horren aplikazioari zuzentzen zaizkio ekintzak, hala nola saguaren klikak, testua idaztea edo teklatuko laster-teklak, esate baterako. Aldi bakoitzean leiho batek bakarrik izan dezake fokua. Fokua duen leihoa beste leihoen gainean agertuko da, eta beste ezerk ez du estaliko leihoaren zatirik. Beste leihoen aldean itxura desberdina ere izan dezake, aukeratutako gaiaren arabera.