Kind 1 versus Kind 3023. Most clients don't allow markdown formatting for kind 1. Kind 3023 content is normally shown with markdown formatting. Kind 1 is generally referred to as a note. Kind 3023 is generally referred to as blog posts, articles, or long formatted content. 

 I’ve been using Damus for most of my time on nostr. Loaded up Nostur and saw it differentiates which is cool. Will have to do some studying.