Good question. There is a particular kind of event on Nostr called a long-form note which is distinct from the standard note. Long form notes are usually longer in word count, but they don't have to be. So, Habla currently shows long-form notes by relay, then sorts them according to the other options (top notes, followed notes, etc.)
**Important caveat: this is how I understand it, and I'm not a developer or very technical 😅.