Wikia vs. MediaWiki vs. DokuWiki vs. TiddlyWiki vs. TWiki

[[a link]]
[[a link|with title]]

[[a Link]]
[[namespace:link]]
[[link|With a Title]]

WikiWord (CamelCase)
[[link]]
[[label|link]]

WikiWord autolink
Otherweb.WikiWord
[[Spaced text]]
[[WikiWord][label]]

[http://example.org The title]

[[http://example.com]]
[[http://example.com|With a Title]]

http://www.example.com
[[label|http://www.example.com]]

http://twiki.org/ autolink
[[http://twiki.org/][label]]

==Section==
===Subsection===
====Sub-subsection====

====== Level 1 ======
===== Level 2 =====
==== Level 3 ====
=== Level 4 ===
== Level 5 ==

! Level 1
!! Level 2
!!! Level 3
!!!! Level 4
!!!!! Level 5

---+ Level 1
---++ Level 2
---+++ Level 3
---++++ Level 4
---+++++ Level 5
---++++++ Level 6

'''bold'''

**bold**

''bold''

*bold*

''italic''

//italics//

//italic//

_italic_

<u>underlined</u>

__underlined__

__underline__

<u>underline</u>

<tt>monospace</tt>

''monospace''

{{{monospaced}}}

=monospaced text= and
<verbatim>
multi line text
</verbatim>

<s>strikethrough</s>

<del>strikethrough</del>

--strikethrough--

<strike>strikethrough</strike>

<sup>superscript</sup>

<sup>superscript</sup>

^^superscript^^

<sup>superscript</sup>

<sub>subscript</sub>

<sub>subscript</sub>

~~subscript~~

<sub>subscript</sub>

[[Image:wiki.png]]

{{local.jpg}}
{{http://foo.bar/baz.jpg}}

[img[local.jpg]]
[img[http://foo.bar/foo.jpg]]

%ATTACHURL%/image.png
http://any.domain/image.png

<center>Centered</center>

Plugin

using custom classes, e.g.
{{right{
text
}}}

| left |   center   |   right |
or HTML
or CSS

: indented line

N/A

:indent

> quote

<<<
blockquote
<<<

<blockquote>
multi line text
</blockquote>

* Item 1
** Item 1.2
* Item 2

* item 1
* item 1.1
* item 2

* Item 1
** Item 1.1
* Item 2

* Item 1
* Item 1.1
* Item 2

# Item 1
## Item 1.2
# Item 2

- item 1
- item 1.1
- item 2

# Item 1
## Item 1.1
# Item 2

1. Item 1
a. Item 1.a
1. Item 2

; term : definition

Plugin

; term
: description

$ Term: Definition

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