h1: Appendix A: Text Markup Reference

I want... Use ...
Bold
*text*
Bold and italic
__text__
Emphasis (see italics)  
Emphasis and strong (see italic and bold)  
Heading
Heading 1
========= Heading 2 --------- Heading 3 ~~~~~~~~~ hX: Heading hX: Heading =#name (where X is between 1 and 6)
Horizontal rule A line consisting only of four or more underscores or hyphens
Italic and bold
__text__
Italics
_text_
Link
"text":http://www.your.com/
"text":/path/to/file.html
"text":#section
"text":mailto:me@my.com
Named anchor
"text"=#name
Ordered list items Indented text of form:
 N. item
 Nx. item
where x can be: - 1 - for arabic numerals - I - for uppercase roman numerals - i - for lowercase roman numerals - A - for uppercase letters - a - for lowercase letters
Paragraph Blocks of text separated by blank lines are treated as paragraphs
Preformatted text (an HTML <pre> section) Indented text not beginning with an ordered or unordered list token (a hyphen, asterisk, letter-o, or plus followed by a space, or an N. or NX. sequence followed by a space - see "Ordered list items" and "Unordered list items" entries)
Strong (see bold)  
Strong and emphasis (see bold and italic)  
Unordered list items Indented text of form:
 - item (presentation browser-specific)
 * disc-marked item
 o circle-marked item
 + square-marked item

Note that various text markup features can be turned off using metadata - see the FAQ if markup isn't working as you'd expect.