KeheiWiki vs. Oddmuse vs. PmWiki vs. TiddlyWiki vs. Zim

%topic%  ( '%' configurable )
or
<link topic>text</link>
or
use HTML in rich text editor

optional, default on:
[[page name]]

optional, default off:
PageName
[PageName] → [1]
[[[page name]]] → [1]
[PageName text] → text
[[page name|text]] → text

Depending on plugins:
[text](page) → text

[[page name]]
[[page name | link text]]
[[link text -> page name]]
[[#anchor]]
[[#anchor|link to anchor]]
[[page name #anchor]]

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

CamelCase [[foobar:subpage]] +subpage 

http://gmail.com/
or
<extern http://gmail.com>a mail server</extern>
or
use HTML in rich text editor

http://example.com/
[http://example.com/] → [1]

optional, default on:
[http://example.com/ text] → text

Depending on plugins:
[text](http://example.com/) → text

http://....
[[http://... | link text]]
[[link text -> http://...]]

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

wp?Wiki_Engine http://wikimatrix.org 
ftp://somehost/share
\\host\share\..

text  ----    
or
insert HTML via WYSIWYG editor

Depending on plugins:
## two
### three
== two ==
=== three ==

section
=======

subsection
----------

! Level 1
!! Level 2
!!! Level 3

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

=== Heading ===

_ text _ 
or
insert HTML via WYSIWYG editor

Depending on plugins:
*bold*
**bold*
'''bold'''

'''bold'''

''bold''

**bold**

* text *
or
insert HTML via WYSIWYG editor

Depending on plugins:
*italic*
/italic/
//italic//
''italic''

''italic''

//italic//

//italic//

insert HTML via WYSIWYG editor

Depending on plugins:
_underline_
__underline__

{+underlined+}

__underline__

__underline__

<wiki code>
stuff
</wiki code>

Depending on plugins:
`mono`
##mono##
[code]mono[/code]
<tt>mono</tt>
<code>mono</code>

@@monospace@@

{{{monospaced}}}

``monospace``

insert HTML via WYSIWYG editor

via bbCode plugin:
[s]strike through[/s]

{-strikethrough-}

--strikethrough--

~~strike~~

insert HTML via WYSIWYG editor

via bbCode plugin:
[sup]superscript[/sup]

'^superscript^'

^^superscript^^

^{sup}

insert HTML via WYSIWYG editor

via bbCode plugin:
[sub]subscript[/sub]

'_subscript_'

~~subscript~~

_{sub}

insert HTML via WYSIWYG editor

http://example.com/pic.jpg

Depending on plugins:
[[image:Name|Text|URL]] and variants
![text](URL)

https://foo.bar/foo.jpg
Attach:foo.jpg
Attach:foo.jpg"alt/title text" | Caption

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

{{./image.png}}

<p align=right> stuff
or
insert HTML via WYSIWYG editor

no example known

%center% centered text
%right% right aligned
%lfloat% left floating text
%rfloat% right floating text
%rframe% right floating frame
%lframe% left floating frame

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

not implemented

<ul>
stuff
</ul>
or
insert HTML via WYSIWYG editor

Depending on plugins:
> text

[quote]
text
[/quote]

: one
:: two

-> indented text
--> more indentation
-< hanging text
--< more indentation

:indent

> quote

<<<
blockquote
<<<

indent with tabs

* text
or
<!> text
or
insert HTML via WYSIWYG editor

* one
** two

* Item 1
** Item 1.1
* Item 2
alternatively, indented:
* item 1
* item 1.1
* item 2

* Item 1
** Item 1.1
* Item 2

* List item
* sub items
* with indent

digits. stuff
or
insert HTML via WYSIWYG editor

Depending on plugins:
1. one
2. two

# one
## two

# Item 1
## Item 1.1
# Item 2
alternatively, indented:
# Item 1
# Item 1.1
# Item 2

# Item 1
## Item 1.1
# Item 2

1. List item
a. with sub items
b. ...

term:    definition
or
insert HTML via WYSIWYG editor

Depending on plugins:
; term: definition

: term : definition

; term
: description

not implemented

can use plain < HR > tag or
via WYSIWYG editor

Depending on plugins:
----

----

----

not implemented