Since you are looking for possible ideas, you may want to look into the TAL project created by the Zope team. It provides an unique alternative to the custom HTML tag solution.
Jean-Michel Hiver has ported TAL to Perl in the guise of Petal. There has been some some discussion on the list of porting it to other languages such as Java. From my limited testing, the TAL format cooperates well with GUI editors like Dreamweaver (unlike other template solutions such as Text::Template).
Good luck and please report back on what you eventually decide to use.
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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>
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
Want more info? How to link or
or How to display code and escape characters
are good places to start.