From Seo Wiki - Search Engine Optimization and Programming Languages
EtText is a simple plain-text format which allows conversion to and from HTML. Instead of editing HTML directly, it provides an easy-to-edit, easy-to-read and intuitive way to write HTML, based on the plain-text markup conventions we've been using for years.
Like most simple text markup formats (POD, setext, etc.), EtText markup handles the usual things: insertion of <p> tags, header recognition and markup. However it also adds a powerful link markup system, and tries to be XHTML-conformant in its generated code.
- Perl: Text::EtText CPAN module