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To post pieces of code, surround them with <code>...</code> tags. For PHP code, you can use <?php ... ?>, which will also colour it based on syntax.

Allowed HTML tags: <a> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <pre>

This site allows HTML content. While learning all of HTML may feel intimidating, learning how to use a very small number of the most basic HTML "tags" is very easy. This table provides examples for each tag that is enabled on this site.

For more information see W3C's HTML Specifications or use your favorite search engine to find other sites that explain HTML.

Tag Description	You Type	You Get
Anchors are used to make links to other pages.	`<a href="http://www.emanaton.com">emanaton</a>`	emanaton
Emphasized	`<em>Emphasized</em>`	Emphasized
Strong	`<strong>Strong</strong>`	Strong
Cited	`<cite>Cited</cite>`	Cited
Coded text used to show programming source code	`<code>Coded</code>`	`Coded`
Unordered list - use the <li> to begin each list item	`<ul> <li>First item</li> <li>Second item</li> </ul>`	First item Second item
Ordered list - use the <li> to begin each list item	`<ol> <li>First item</li> <li>Second item</li> </ol>`	First item Second item
Definition lists are similar to other HTML lists. <dl> begins the definition list, <dt> begins the definition term and <dd> begins the definition description.	`<dl> <dt>First term</dt> <dd>First definition</dd> <dt>Second term</dt> <dd>Second definition</dd> </dl>`	First term First definition Second term Second definition
Preformatted	`<pre>Preformatted</pre>`	Preformatted

Most unusual characters can be directly entered without any problems.

If you do encounter problems, try using HTML character entities. A common example looks like & for an ampersand & character. For a full list of entities see HTML's entities page. Some of the available characters include:

Character Description	You Type	You Get
Ampersand	`&`	&
Greater than	`>`	>
Less than	`<`	<
Quotation mark	`"`	"

Lines and paragraphs are automatically recognized. The line break, paragraph and close paragraph tags are inserted automatically. If paragraphs are not recognized simply add a couple blank lines.
You can insert footnotes directly into texts with [fn]This text becomes a footnote.[/fn]. This will be replaced with a running number (the footnote reference) and the text within the [fn] tags will be moved to the bottom of the page (the footnote).
Web page addresses and e-mail addresses turn into links automatically. (Better URL filter.)
Syntax highlight code surrounded by the {syntaxhighlighter OPTIONS}...{/syntaxhighlighter} tags, where OPTIONS is a Syntaxhighlighter options string.

Example: {syntaxhighlighter brush:php;collapse:true;first-line:50;highlight:[57,81,101];class-name:'some_class some_other_class'}...{/syntaxhighlighter}

This will syntax highlight PHP code, initially collapsed, start line number at 50, highlight lines 57, 81 and 101 and tag highlighted code with class names some_class and some_other_class.
See usage, language aliases and options for additional helps.

Note: instead of using the raw HTML <pre> tag markup from the original Syntaxhighlighter Javascript Library, you enable the Syntaxhighlighter filter in an input format, and then use the {syntaxhighlighter OPTIONS}...{/syntaxhighlighter} markup using that input format. The OPTIONS string is whatever you would put inside the class string as in <pre class="OPTIONS">...</pre> according to the original Javascript Library format. Secondly, you do not need to escape the "<" and ">" characters in your program code as required by the original Syntaxhighlighter Javascript Library. This is automatically taken care of so you can leave your program code completely unchanged. Thirdly, if you use the HTML filter, you must allow the <pre> tag.