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Now you can shortcut linking to outside urls by using a http:// prefix in your bracketed links

[http://perlmonks.org]to produce a link like http://perlmonks.org

[http://perlmonks.org|killer new website that is the rage with kids these days] to produce a link like killer new website that is the rage with kids these days

You can also link to books on fatbrain.com using the isbn:// prefix

[isbn://1565922840|Learning Perl]to product a link like Learning Perl

vroom | Tim Vroom | vroom@cs.hope.edu

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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.