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{{short description|Declarative authoring language for hypermedia documents}}
{{Technical|date=September 2009}}
In the field of digital and interactive television, '''Nested Context Language
NCL is an [[XML]] application language that is an extension of [[XHTML]], with XML elements and attributes specified by a modular approach. NCL modules can be added to standard web languages, such as [[XLink]] and [[Synchronized Multimedia Integration Language|SMIL]].
NCL was initially designed for the Web environment, but a major application of NCL is use as the declarative language of
==Structure of an NCL document==
NCL was designed to be modular to allow for use of subsets of modules according to the needs of the particular application. The 3.1 version of the standard is split into 14 areas with each module assigned to an area.<ref>{{cite web|title=H.761
*Structure
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**Metainformation Module
==NCL
Profiles are standard subsets of modules. Profiles defined by the standard include
* '''Full
* '''Enhanced Digital TV profile (EDTV)'''
* '''NCL Basic Digital TV profile (BDTV)'''
==Authoring
Tools for creating interactive DTV application in NCL include:
* [[NCL Eclipse]]
==See also==
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==References==
{{reflist}}
==Further reading==
*{{cite book|author=Marcelo S. Alencar|title=Digital Television Systems|url=https://books.google.com/books?id=M96rKRAqHFgC&pg=PA198|date=19 March 2009|publisher=Cambridge University Press|isbn=978-0-521-89602-3|page=198}}
*{{cite book|author=Shūji Hashimoto|title=Multimedia Modeling: Modeling Multimedia Information and Systems : Nagano, Japan, November 13-15, 2000|url=https://books.google.com/books?id=xqOUeONT6qYC&pg=PA72|date=1 January 2000|publisher=World Scientific|isbn=978-981-02-4489-7|pages=72, 79, 86–87}}
*{{cite journal|journal=Journal of the Brazilian Computer Society|date=November 2010|volume=16|issue=4|pages=229–245|title=The Nested Context Language reuse features|author1=Carlos de Salles Soares Neto|author2=Luiz Fernando Gomes Soares|author3=Clarisse Sieckenius de Souza|doi=10.1007/s13173-010-0017-z|doi-access=free}}
*{{cite book|author=Jean-Yves Vion-Dury|title=Proceedings of the ACM Symposium on Document Engineering|url=https://books.google.com/books?id=SEpPAAAAMAAJ|year=2004|publisher=ACM Press|page=188ff|isbn=9781581139389}}
==External links==
* [http://www.ncl.org.br NCL Official Web Site]
* [http://handbook.ncl.org.br/ NCL Handbook]
* [http://www.telemidia.puc-rio.br Telemidia
* [http://www.telemidia.puc-rio.br/~roberto/ncl-resources NCL Resources]: a number of resources supporting NCL.
===NCL
* [http://
* [
* [https://github.com/lince/webncl WebNCL Player] Web-based, available under GPL.
[[Category:Markup languages]]
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[[Category:Broadcast engineering]]
[[Category:Digital television]]
[[Category:ISDB]]
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