Horizontal ruler:

----
gives you:

Paragraphs are delimitted by a blank line.

This is Paragraph 1

This is Paragraph 2
gives you:

This is Paragraph 1

This is Paragraph 2


Forced Line Break:

This is first line,\\this is second line!

gives you:

This is first line,
this is second line!


Hyperlinks

[~Main] , [http://www.mssl.ucl.ac.uk], [~GeneralEditSkills#~]
gives you:

~Main , http://www.mssl.ucl.ac.uk, ~GeneralEditSkills#~

however,

[[link]
gives you:

[link]


Text with a hyperlink
[MSSL Homepage|http://www.mssl.ucl.ac.uk]
gives you:

MSSL Homepage


Section headers: have ! in the first column:
!small
!!medium
!!!large
gives you:

small#

medium#

large#


Bulleted lists have * in the first column:
(Use more ** for deeper indentations)

* Item one
** Item two
* Item three
gives you:
  • Item one
    • Item two
  • Item three

Numbered lists have #, ## etc.
(You can mix * and # too.)
# MSSL
# NAOJ
# NRL
gives you:
  1. MSSL
  2. NAOJ
  3. NRL

Monospaced text:
 {{monospaced text with wiki markup}} 
gives you:

monospaced text with wiki markup


Code blocks: Use triple {‘s to open, and triple }‘s to close code blocks, wiki markup is not rendered.
 {{{ this is code block! 
}}} gives you:
this is code block!

Text decorations:
__bold__
gives you: bold
''italic''
gives you: italic

Text CSS Styles
start: %%css-class or %%(css-style)
end: %% or /% or %~<space>

examples:

%%small text %% renders as text
%%sub subscript %% like in aij = aji
%%sup superscript %% like in 23 = 8
%%strike strikethrough %% renders as strikethrough
%%center ... %% for centered text
%%invisible ... %% to hide parts of a page

your own customed css style:

%%(font-size:150%;color:red;)
Hello, world!
%%
gives you:
Hello, world!