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**__The Term Wiki__**
The term “wiki” is apply to both the wikipedia and wikispaces. It represents a type of web site that allows subscribers themselves to edit or remove existing content and to add new information. This type of pages are run on collaborative software (wiki engine), that’s the origin of this term

**__History of Wiki__**
The first software appear in the market was named by Ward Cunningham. “I chose wiki-wiki as an alliterative substitute for ‘quick’ and thereby avoided naming this stuff quick-web.” “Wiki wiki” is a reduplication of ‘wiki’, it stands for quick in Hawaiian language.

It was started in the late 1980’s, Cunningham wrote the hypercard stack that applied the idea of “wiki”. In the late 1990’s the founder of the Wikipedia which was known as the Nupedia encyclopedia project as wikis were recognized as a favorable way to provide private and public knowledge bases. In the early 2000s, wiki based software were widely used including project communication, intranets, and documentation for technical users. In December 2000, open soure wiki software was available, downloaded, and installed licensed free to the public provided Socialtext.

**__How does it work?__**
Wiki does not require sophisticated program or computer language to operate. Most of the wiki based website such as wikipedia and wikispaces include various tools and a word text interface to generate the coding. This system provides subscribers an easy way to modify at any time. Every time a changes is made, it will be recorded in the system to provide undo action.

**__Specification__**
-easy to use maintained database for searching or even creating information -any page content added is known as “wiki page” -ease with creating and updating information -Most wiki are open to the general public without the need to register -Changes made are show up synchronously

**__Types of Wikis__**
Server based: This is the most common wiki system. The functions are built on the server through the engine that convert every single detail into a HTML page and display on your web browser.

Client Based: The editing functions are display on your browser. It is similar to traditional web browser than code plug-in.

Web based: Most wiki pages are based on this server. It is use on world wide web and It’s open to everybody on the internet or LAN network.

Peer to Peer: It is integrated on a P2P network system.

**__Modification__**
Wikis are design to anyone that has experience with text edit program. It has a simple interface of a word edit program such as MS word. You can undo, bold, or underline on the page. In addition the command works on the page too such as Ctrl + Z to undo. When a change is made, there is no review before modifications are accepted. Then a change is made, the information will be engrave into the history log displaying who change it and compare the previous form and moderator can revert changes if the subscriber added untruth information or made damages to this site.

**Reference**
Wikipedia. 2003 **<**[|**http://en.wikipedia.org/wiki/Wiki**]**>**