A wiki (i// WIK-ee) is a web application which allows people to add, modify, or delete content in collaboration with others. In a typical wiki, text is written using a simplified markup language (known as "wiki markup") or a rich-text editor.[1][2] While a wiki is a type of content management system, it differs from a blog or most other such systems in that the content is created without any defined owner or leader, and wikis have little implicit structure, allowing structure to emerge according to the needs of the users.[2]
The encyclopedia project Wikipedia is the most popular wiki on the public web in terms of page views,[3] but there are many sites running many different kinds of wiki software. Wikis can serve many different purposes both public and private, including knowledge management, notetaking, community websites and intranets. Some permit control over different functions (levels of access). For example, editing rights may permit changing, adding or removing material. Others may permit access without enforcing access control. Other rules may also be imposed to organize content.
Ward Cunningham, the developer of the first wiki software, WikiWikiWeb, originally described it as "the simplest online database that could possibly work".[4] "Wiki" (pronounced [wiki][note 1]) is a Hawaiian word meaning "quick".[5][6][7]
Ward Cunningham and co-author Bo Leuf, in their book The Wiki Way: Quick Collaboration on the Web, described the essence of the Wiki concept as follows:[8]
A wiki enables communities to write documents collaboratively, using a simple markup language and a web browser. A single page in a wiki website is referred to as a "wiki page", while the entire collection of pages, which are usually well interconnected by hyperlinks, is "the wiki". A wiki is essentially a database for creating, browsing, and searching through information. A wiki allows non-linear, evolving, complex and networked text, argument and interaction.[9]
A defining characteristic of wiki technology is the ease with which pages can be created and updated. Generally, there is no review before modifications are accepted. Many wikis are open to alteration by the general public without requiring registration of user accounts. Many edits can be made in real-time and appear almost instantly online. This can facilitate abuse of the system. Private wiki servers require user authentication to edit pages, and sometimes even to read them.
Maged N. Kamel Boulos, Cito Maramba and Steve Wheeler write that the open wikis produce a process of Social Darwinism. "'Unfit' sentences and sections are ruthlessly culled, edited and replaced if they are not considered 'fit', which hopefully results in the evolution of a higher quality and more relevant page. Whilst such openness may invite 'vandalism' and the posting of untrue information, this same openness also makes it possible to rapidly correct or restore a 'quality' wiki page."[10]
Some wikis have an "edit" button or link directly on the page being viewed, if the user has permission to edit the page. If the user does not have the ability to edit the page (due to protection) the page may have a button that says "view source". This leads to an editing page which allows participants to structure and format wiki pages with a simplified markup language, sometimes known as wikitext (for example, starting a line of text with an asterisk often sets up a bulleted list). The style and syntax of wikitexts can vary greatly among wiki implementations,[example needed] some of which also allow HTML tags. Wikis favour plain-text editing, with fewer and simpler conventions than HTML, for indicating style and structure. Although limiting access to HTML and Cascading Style Sheets (CSS) of wikis limits user ability to alter the structure and formatting of wiki content, there are some benefits. Limited access to CSS promotes consistency in the look and feel, and having JavaScript disabled prevents a user from implementing code that may limit other users' access. The "view source" link links to a page where the user can view the markup of the page.
"I've had '''nothing''' yet," Alice replied in an offended tone, "so I can't take more."
"You mean you can't take ''less''?" said the Hatter. "It's very easy to take ''more'' than nothing."
See the article here:
Wiki - Wikipedia, the free encyclopedia