The Spirit in the Computer
Scratch Pad

Try out Instiki markup here. This Wiki uses Textile markup, so, alternatively, you can click across to Textism and try things out there.
You can do preformatted text like this:

                           .,ad88888888baa,
                  _    ,d8P"""        ""9888ba.      _
                 /  .a8"          ,ad88888888888a   |\
               /   aP'          ,88888888888888888a   \
              /  ,8"           ,88888888888888888888,  \
             |  ,8'            (888888888888888888888, |
            /  ,8'             `8888888888888888888888  \
            |  8)               `888888888888888888888, |
Procedure,  |  8                  "88888 Apply 8888888) | Expression
Arguments   |  8     Eval          `888888888888888888) | Environment
            |  8)                    "8888888888888888  |
            \  (b                     "88888888888888'  /
             | `8,                     8888888888888)  |
             \  "8a                   ,888888888888)  /
              \   V8,                 d88888888888"  /
              _\| `8b,             ,d8888888888P' _/
                     `V8a,       ,ad8888888888P'
                        ""88888888888888888P" 
                             """""""""""" 
                              [graphic by Normand Veillux, modified]

Blockquotes work just fine! User error on my part.

Heading1

You can reference footnotes¹

Heading2

Heading3

italics bold

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¹ This is footnote 1

Language Wars
Peter Norvig