rich1.0HelloWorld wroteHelloWorld (npub1u8…qtx5g)https://nostr.now/npub1u8cqn3pl0dj70x64pkd33nrzl8k0um4ftnvn3lpjas89wp5r3uaslqtx5gnjumphttps://nostr.nowI think it is JSX. https://www.jsx.com/