Overlay may refer to:

Computers

* Overlay network, a computer network which is built on top of another network * Hardware overlay, one type of video overlay that uses memory dedicated to the application *Another term for exec, replacing one process by another * Overlay (programming), a technique to reduce the amount of memory used by a program * Overlay keyboard, a specialized keyboard with no pre-set keys *

Keyboard overlay A keyboard layout is any specific physical, visual or functional arrangement of the keys, legends, or key-meaning associations (respectively) of a computer keyboard, mobile phone, or other computer-controlled typographic keyboard. is the actua ...

, a sheet of printed text sitting between the keys, depicting an alternate keyboard layout * Vector overlay, an analysis procedure in a geographic information system for integrating multiple data sets

Other uses

* Overlay architecture, temporary elements that supplement existing buildings and infrastructure for major sporting events or festivals * Overlay control, in semiconductor manufacturing, for monitoring layer-to-layer alignment on multi-layer device structures * Overlay plan, a method of introducing new area codes in telephony * Historic overlay district, a zoning district that applies special rules to a portion of other districts, usually for historic or conservation reasons * Video overlay, techniques to display video on computer display *When the payoffs in gambling are greater than the costs; see Advantage gambling

Computers

Other uses

See also