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Overlay may refer to:


Computers

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Overlay network An overlay network is a logical computer network that is protocol layering, layered on top of a physical network. The concept of overlay networking is distinct from the traditional model of OSI model, OSI layered networks, and almost always assum ...
, a computer network which is built on top of another network *
Video overlay {{Distinguish, on-screen display Video overlay is any technique used to display a video window on a computer display while bypassing the chain of CPU to graphics card to computer monitor. This is done in order to speed up the video display, and it ...
, techniques to display video on computer display *
Hardware overlay In computing, hardware overlay, a type of video overlay, provides a method of rendering an image to a display screen with a dedicated memory buffer inside computer video hardware. The technique aims to improve the display of a fast-moving video i ...
, one type of video overlay that uses memory dedicated to the application *Another term for exec, replacing one process by another *
Overlay (programming) In a general computing sense, overlaying means "the process of transferring a Block (data storage), block of program code or other data into main memory, replacing what is already stored". Overlaying is a computer programming, programming metho ...
, a technique to reduce the amount of memory used by a program *
Overlay keyboard An overlay keyboard or concept keyboard is a specialized keyboard with no preset keys. Each key can be programmed with a wide range of different functions. Overlay keyboards are often used as a quick and easy way to input items with just two butto ...
, a specialized keyboard with no pre-set keys * Keyboard overlay, a sheet of printed text sitting between the keys, depicting an alternate keyboard layout *
Vector overlay Vector overlay is an operation (or class of operations) in a geographic information system (GIS) for integrating two or more vector spatial data sets. Terms such as ''polygon overlay'', ''map overlay'', and ''topological overlay'' are often used ...
, an analysis procedure in a geographic information system for integrating multiple data sets


Other uses

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Overlay architecture Overlay architecture, or Overlay, is "event architecture", such as the temporary elements that are added to more permanent buildings to enable the operation of major sporting events or festivals. These elements provide additional facilities for t ...
, temporary elements that supplement existing buildings and infrastructure for major sporting events or festivals *
Overlay complex In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to the same geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbe ...
, a method of introducing new area codes in telephony *
Overlay control In silicon wafer manufacturing overlay control is the control of pattern-to-pattern alignment necessary in the manufacture of silicon wafers. Silicon wafers are currently manufactured in a sequence of steps, each stage placing a pattern of material ...
, in semiconductor manufacturing, for monitoring layer-to-layer alignment on multi-layer device structures *
Historic overlay district A historic overlay district is a layer of local planning regulation in the United States which incorporates the restrictions of the underlying zoning for a given geographic area, with the main goal of preserving the historic character of the neighb ...
, a zoning district that applies special rules to a portion of other districts, usually for historic or conservation reasons *When the payoffs in gambling are greater than the costs; see
Advantage gambling Advantage gambling, or advantage play, refers to legal methods used to gain an advantage while gambling, in contrast to cheating. The term usually refers to house-banked casino games, but can also refer to games played against other players, su ...


See also

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Layover (disambiguation) A layover is a point where a vehicle stops, with passengers possibly changing vehicle. Layover may also refer to: * ''Layover'' (novel), a 1999 novel by Lisa Zeidner * ''The Layover'' (TV series), an American travel and food show *'' The Layover ...
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Over (disambiguation) Over may refer to: Places *Over, Cambridgeshire, England * Over, Cheshire, England **Over Bridge * Over, South Gloucestershire, Gloucestershire, England * Over, Tewkesbury, Gloucestershire, England * Over, Seevetal, Germany Music Albums * ''Ov ...
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Lay (disambiguation) Lay or LAY may refer to: Places *Lay Range, a subrange of mountains in British Columbia, Canada *Lay, Loire, a French commune *Lay (river), France * Lay, Iran, a village * Lay, Kansas, United States, an unincorporated community * Lay Dam, Alabam ...
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Overlap (disambiguation) Overlap may refer to: * In set theory, an overlap of elements shared between sets is called an intersection, as in a Venn diagram. * In music theory, overlap is a synonym for reinterpretation of a chord at the boundary of two musical phrases * Ove ...
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Overload (disambiguation) Overload or overloaded may refer to: Arts and entertainment *Overload (novel), ''Overload'' (novel), a 1979 novel by Arthur Hailey *Overload (Teen Titans), Overload ''(Teen Titans)'', a character from the ''Teen Titans'' animated series *Overloa ...
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Superposition (disambiguation) A superposition is a linear combination. It can also refer to: Math and science Math * The superposition principle of Linear differential equation, linear differential equations (LDEs), that a linear combination of solutions to an LDE is its ...
* {{Disambiguation