These are long-form posts that are a different kind compared to the regular short-form posts you see in the feed. You can create them on clients like https://highlighter.com 

 Ah ok, so you cannot create them in Nostr/Primal directly? 

 Highlighter is a nostr client so you can login with nostr on web and start publishing! 

 Awesome, thanks Oscar! 🤝🏻