Key advantages include needing less runtime storage and the ability to correct errors in words that are not included in a dictionary.In some cases spell checkers use a fixed list of misspellings and suggestions for those misspellings; this less flexible approach is often used in paper-based correction methods, such as the see also entries of encyclopedias.In computing, a spell checker (or spell check) is an application program that flags words in a document that may not be spelled correctly.Spell checkers may be stand-alone, capable of operating on a block of text, or as part of a larger application, such as a word processor, email client, electronic dictionary, or search engine.Although the size of the word-processing market in a country like Iceland might not have justified the investment of implementing a spell checker, companies like Word Perfect nonetheless strove to localize their software for as many national markets as possible as part of their global marketing strategy.Firefox 2.0, a web browser, has spell check support for user-written content, such as when editing Wikitext, writing on many webmail sites, blogs, and social networking websites.
This approach usually requires a lot of effort to obtain sufficient statistical information.If there are more than this, incorrectly spelled words may be skipped because they are mistaken for others.For example, a linguist might determine on the basis of corpus linguistics that the word baht is more frequently a misspelling of bath or bat than a reference to the Thai currency.The first spell checkers were widely available on mainframe computers in the late 1970s.
A group of six linguists from Georgetown University developed the first spell-check system for the IBM corporation.
Eye strike the quays and type a whirred And weight four it two say Weather eye am write oar wrong It tells me straight a weigh. A chequer is a bless thing, It freeze yew lodes of thyme.