Editing Anagram (section)

==Methods of construction==
Sometimes, it is possible to "see" anagrams in words, unaided by tools, though the more letters involved the more difficult this becomes. The difficulty is that for a word of {{mvar|n}} different letters, there are {{math|''n''!}} ([[factorial]] of {{mvar|n}}) different [[permutation]]s and so {{math|''n''! − 1}} different anagrams of the word. [[Anagram dictionary|Anagram dictionaries]] can also be used. Computer programs, known as "anagram search", "anagram servers", and "anagram solvers", among other names, offer a much faster route to creating anagrams, and a large number of these programs are available on the Internet.<ref>{{cite web |title=anagram search engine|url=https://aigram.org/|access-date=11 June 2021}}</ref><ref>{{cite web |title=internet anagram server| url=https://wordsmith.org/anagram/|access-date=11 June 2021}}</ref> Some programs use the [[Anatree]] algorithm to compute anagrams efficiently.

The [[Computer program|program]] or [[Server (computing)|server]] carries out an exhaustive search of a database of words, to produce a list containing every possible combination of words or phrases from the input word or phrase using a [[jumble algorithm]]. Some programs (such as ''Lexpert'') restrict to one-word answers. Many anagram servers (for example, [http://findwords.online4me.com The Words Oracle]) can control the search results, by excluding or including certain words, limiting the number or length of words in each anagram, or limiting the number of results. Anagram solvers are often banned from online anagram games. The disadvantage of computer anagram solvers, especially when applied to multi-word anagrams, is their poor understanding of the meaning of the words they are manipulating. They usually cannot filter out meaningful or appropriate anagrams from large numbers of nonsensical word combinations. Some servers attempt to improve on this using statistical techniques that try to combine only words that appear together often. This approach provides only limited success since it fails to recognize ironic and humorous combinations.

Some anagrammatists indicate the method they used. Anagrams constructed without the aid of a computer are noted as having been done "manually" or "by hand"; those made by utilizing a computer may be noted "by machine" or "by computer", or may indicate the name of the computer program (using ''Anagram Genius'').

There are also a few "natural" instances: English words unconsciously created by switching letters around. The French ''chaise longue'' ("long chair") became the American "[[chaise longue|chaise lounge]]" by [[metathesis (linguistics)|metathesis]] (transposition of letters and/or sounds). It has also been speculated that the English "curd" comes from the Latin ''crudus'' ("raw"). Similarly, the ancient English word for bird was "brid".