London has public transport. (Article link)

• A link to another Wiki article.
• Internally, the first letter of the target page is automatically capitalized and spaces are represented as underscores (typing an underscore in the link has the same effect as typing a space, but is not recommended).
• Thus the link above is to the URL en.wikipedia.org/wiki/Public_transport, which is the Wikipedia article with the name "Public transport". See also Canonicalization.

London has [[public transport]].

San Francisco also has public transportation. (Renamed link)

• Same target, different name.
• The target ("piped") text must be placed first, then the text to be displayed, second.

San Francisco also has [[public transport|public transportation]].

San Francisco also has public transportation. (Blend link)

Examples include buses, taxicabs, and trams.

• Endings are blended into the link.
  • Exception: a trailing apostrophe (') and any characters following the apostrophe are not blended.
• Preferred style is to use this instead of a piped link, if possible.
• Blending can be suppressed by using <nowiki></nowiki> tags, which may be desirable in some instances. Example: a micro-second.

San Francisco also has [[public transport]]ation.

Examples include [[bus]]es, [[taxicab]]s, and [[tram]]s.

a [[micro-]]<nowiki>second</nowiki>

See the Wikipedia:Manual of Style. (Other page link)

• A link to another namespace.

See the [[Wikipedia:Manual of Style]].

Wikipedia:Manual of Style#Italics is a link to a section within another page.

#Links and URLs is a link to another section on the current page.

Italics is a piped link to a section within another page.

• The part after the number sign (#) must match a section heading on the page. Matches must be exact in terms of spelling, case, and punctuation. Links to non-existent sections are not broken; they are treated as links to the top of the page.
• Include "| link title" to create a stylish (piped) link title.

[[Wikipedia:Manual of Style#Italics]] is a link to a section within another page.

[[#Links and URLs]] is a link to another section on the current page.

[[Wikipedia:Manual of Style#Italics|Italics]] is a piped link to a section within another page.

(Example renamed links)

Automatically hide stuff in parentheses: kingdom.

Automatically hide namespace: Village pump.

Or both: Manual of Style

But not: [[Wikipedia:Manual of Style#Links|]]

• The server fills in the part after the pipe character (|) when you save the page. The next time you open the edit box you will see the expanded piped link. When previewing your edits, you will not see the expanded form until you press Save and Edit again. The same applies to links to sections within the same page (see previous entry).
• See Pipe trick for details.

Automatically hide stuff in parentheses: [[kingdom (biology)|]].

Automatically hide namespace: [[Wikipedia:Village pump|]].

Or both:[[Wikipedia:Manual of Style (headings)|]]

But not:[[Wikipedia:Manual of Style#Links|]]

(Create page link)

Links to pages that don’t exist yet look red: Wikipedia:Community portal/Opentask/Requested articles

• You can create it by clicking on the link.
• To create a new page:
  1. Create a link to it on some other (related) page.
  2. Save that page.
  3. Click on the link you just made. The new page will open for editing.
• For more information, see starting an article and check out Wikipedia's naming conventions.
• Please do not create a new article without linking to it from at least one other article.

Links to pages that don’t exist yet look red: [[Wikipedia:Community portal/Opentask/Requested articles]]

(Navigation links)

Wikipedia:How to edit a page is a link to this page.

• Self links appear as bold text when the article is viewed.
• Do not use this technique to make the article name bold in the first paragraph; see Article titles.

[[Wikipedia:How to edit a page]] is a link to this page.

(Signing comments)

The character tilde (~) is used when adding a comment to a Talk page. You should sign your comment by appending four tildes (~~~~) to the comment so as to add your user name plus date/time:

User:Patricia Zhang 13:40, Jan 14, 2007 (UTC)

Adding three tildes (~~~) will add just your user name:

User:Patricia Zhang

and adding five tildes (~~~~~) gives the date/time alone:

13:40, Jan 14, 2007 (UTC)

• The first two both provide a link to your user page.

The character '''tilde''' (~) is used when adding a comment to a Talk page. You should sign your comment by appending four tildes (~~~~) to the comment so as to add your user name plus date/time:
:~~~~
Adding three tildes (~~~) will add just your user name:
: ~~~
and adding five tildes (~~~~~) gives the date/time alone:
: ~~~~~

(Redirects)

• Redirect one article title to another by placing a directive like the one shown to the right on the first line of the article (such as at a page titled "USA").
• It is possible to redirect to a section. For example, a redirect to United States#History will redirect to the History section of the United States page, if it exists.

#REDIRECT [[United States]]

#REDIRECT [[United States#History]] will redirect to the [[United States]] page, to the History section, if it exists

(Wikimedia link)

To connect, via interwiki link, to a page on the same subject in another language, put a link of the form: [[language code:Title]] near the bottom of the article. For example, in article "Plankton", which is available on a lot of other wikis, the interwiki link to the German Wikipedia looks like:

[[:de:Plankton]]

where the "de" is the language-code for "Deutsch" (the German language).

• It is recommended interwiki links be placed at the very end of the article.
• Interwiki links are not visible within the formatted article but, instead, appear as language links on the extreme left-margin column of a Wikipedia page (under menu section "languages").
• Please see Interlanguage links and the Complete list of language wikis available.

[[:de:Plankton]] [[:es:Plancton]] [[:ru:Планктон]] [[:simple:Plankton]]

(Linked and why)

What links here and Related changes pages can be linked as:
Special: Whatlinkshere/Wikipedia: How to edit a page and Special: Recentchangeslinked/Wikipedia: How to edit a page

'''What links here''' and '''Related changes''' pages can be linked as:
[[Special: WhatLinkshere/Wikipedia: How to edit a page]] and
[[Special: RecentChangeslinked/ Wikipedia: How to edit a page]]

(User edits)

A user's Contributions page can be linked as: Special:Contributions/UserName or Special:Contributions/192.0.2.0

A user's '''Contributions''' page can be linked as: [[Special:Contributions/UserName]] or [[Special:Contributions/192.0.2.0]]

(Categorize)

• To put an article in a category, place a link like the one to the right anywhere in the article. As with interlanguage links, it does not matter where you put these links while editing as they will always show up in the same place when you save the page, but placement at the end of the edit box is recommended.

[[Category:Character sets]]

(Category page link)

• To link to a category page without putting the article into the category, use a colon prefix (":Category") in the link. The formatted text link will appear as: Category:Character sets.

[[:Category:Character sets]]

(External links)

Three ways to link to external (non-wiki) sources:

1. Bare URL: http://www.wikipedia.org/ (bad style)
2. Unnamed link: [1] (only used within article body for footnotes)
3. Named link: Wikipedia

See meta:interwiki map for the list of shortcuts.

• Square brackets indicate an external link. Note the use of a space (not a pipe) to separate the URL from the link text in the "named" version.
• In the URL, all symbols must be among:
  A-Z a-z 0-9 . _ \ / ~ % - + & # ? ! = ( ) @
• If a URL contains a character not in this list, it should be encoded by using a percent sign (%) followed by the hex code of the character, which can be found in the table of ASCII printable characters. For example, the caret character (^) would be encoded in a URL as %5E.
• If the "named" version contains a closing square bracket "]", then you must use the HTML special character syntax, i.e. &#93; otherwise the MediaWiki software will prematurely interpret this as the end of the external link.
• There is a class that can be used to remove the arrow image from the external link. It is used in Template:Ref to stop the URL from expanding during printing. It should never be used in the main body of an article. However, there is an exception: wikilinks in Image markup. An example of the markup is as follows:
  • Markup: <span class="plainlinks neverexpand"> [http://www.sysinternals.com/ ntw2k/freeware/winobj.shtml WinObj]</span>
  • Display: WinObj
• See External links for style issues.

Three ways to link to external (non-wiki) sources:
# Bare URL: http://en.wikipedia.org/ (bad style)
# Unnamed link: [http://en.wikipedia.org/] (only used within article body for footnotes)
# Named link: [http://en.wikipedia.org Wikipedia]

(Wikimedia text link)

Linking to other wikis:

1. InterWiki link: Wiktionary:Hello
2. Interwiki link without prefix: Hello
3. Named interwiki link: Wiktionary definition of 'Hello'

• All of these forms lead to the URL http://en.wiktionary.org/wiki/Hello
• Note that interwiki links use the internal link style.
• See MetaWikiPedia:Interwiki_map for the list of shortcuts; if the site you want to link to is not on the list, use an external link (see above).
• See also Wikimedia sister projects.

Linking to another language's wiktionary:

1. Wiktionary:fr:bonjour
2. bonjour
3. fr:bonjour

• All of these forms lead to the URL http://fr.wiktionary.org/wiki/bonjour

Linking to other wikis:
# [[InterWiki]] link: [[Wiktionary:Hello]]
# Interwiki link without prefix: [[Wiktionary:Hello|]]
# Named interwiki link: [[Wiktionary:Hello|Wiktionary definition of 'Hello']]

Linking to another language's wiktionary:

# [[Wiktionary:fr:bonjour]]
# [[Wiktionary:fr:bonjour|bonjour]]
# [[Wiktionary:fr:bonjour|]]

(Book sources)

ISBN 012345678X

ISBN 0-12-345678-X

Link to a book using alternate text, such as its title.

• Link to books using their ISBN. This is preferred to linking to a specific online bookstore, because it gives the reader a choice of vendors. However, if one bookstore or online service provides additional free information, such as table of contents or excerpts from the text, then a link to that source will aid the user and is recommended. ISBN links do not need any extra markup, provided you use one of the indicated formats.
• To create a link to Book Sources using alternate text (e.g. the book's title), use the internal link style with the appropriate namespace.

ISBN 012345678X

ISBN 0-12-345678-X

[[Special:BookSources/0670037818|alternate text, such as its title]]

(RFC number)

Text mentioning an RFC number anywhere, e.g. RFC 4321.

• Link to Internet Engineering Task Force Request for Comments (RFCs).

Text mentioning an RFC number anywhere, e.g. RFC 4321.

(“As of” tag)

“As of” tags like "As of April 2009" and "as of April 2009" categorize info that will need updating.

“[[WP:As of|As of]]” tags like "{{As of|2009|4|df=us}}" and "{{As of|2009|4|df=us|lc=on}}" categorize info that will need updating.

(Media link)

Sound

• To include links to non image uploads such as sounds, use a "media" link. For images, see next section.

Some uploaded sounds are listed at Commons:Sound.

[[media:Classical guitar scale.ogg|Sound]]

(Edit links)

Link directly to edit for an existing page, or apply other link attributes.

• use {{fullurl:}}
• or use {{template:edit}} which conceals the edit label for page printing

{{fullurl:page name|action=edit}}