Use the test page to try out wiki text.
Heading Level 1
Heading Level 2
Italic text
'Bold text' -- not that you can tell with the OldSkool theme which is all bold.
indented text line 1, with a space following:
then line 2
A table
|
heading
|
And some
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data
|
A user link.
A category link.
A page link.