Topic: Code blocks in <pre><code>
PunBB currently marks up code snippets as a <pre> wrapped in a <div> with a special class. However there is a common convention of marking up code snippets as <pre><code>. It is used by Markdown and is proposed for standartization in HTML5. More than this it just makes sense semantically and is very clean (e.g. doesn't require any special classes).
I think PunBB could easily adopt this technique by adding <code>...</code> inside <pre> also keeping the wrapper div. This would be backward compatible and will make it forward compatible with whatever tools using this convention would appear in the future.
Thank you for your attention!