Summarized from the Red Cloth site

Paragraphs

• Separate paragraphs with a blank line, or precede with a @p. @
• Two dashes make emdashes
• Three periods becomes an ellipsis
• ® is created via (r)
• © is created via (c)

Modifiers

• Camel text creates wiki links automatically
• Wiki links can be renamed via parens following the camel text
• Surround a phrase with * for bold/strong
• Surround a phrase with _ for italic/stress
• Surround a phrase with ?? for citation
• Surround a phrase with - for strikethrough
• Surround a phrase with + for addition
• Use ~ for subscript
• Use ^ for superscript
• Links are made via "link text":http://url.to.link.com/blah
• Surround the entire thing with square brackets if it’s not clear where the link starts or ends
• link to images via !http://www.images.com/blah.jpg
• link gliffy diagrams via !gliffy diagram_id | align | size where “align” is either “left”, “right”, or “center” and “size” is “T”, “S”, “M”, or “L”

Layout

• Headings are created via h1., h2., h3. etc. Note that the dots must be followed by spaces.
• Block quotes can be created via
  • bq.
  • bq.:http://the.reference.url
  • bq.. – this method will continue the block quote until you use another Textile style.
• Bullet lists are made via *; nested lists via multiple, e.g. **
• Numbered lists are smilar, using # and ## (e.g.) for nested.
• Definition lists can be made via - term := definition
• Footnotes can be made via [1] where you make reference and fn1. explanation later on to provide the reference
• Tables can be made via pipe characters, using _. in a cell to indicate it’s a heading