If you're talking about the gemtext format, unfortunately beyond titles, list, blockquotes, preformatted texts, and links, nothing else has been standardized.

If you're talking about the gemtext format, unfortunately beyond titles, list, blockquotes, preformatted texts, and links, nothing else has been standardized. I understand the appeal of simplicity but if you ask me that's a huge step backwards compared to HTML5. No <form>, no <section>/<article... It's like markdown but with another syntax :-/