nostr:nprofile1qqsf03c2gsmx5ef4c9zmxvlew04gdh7u94afnknp33qvv3c94kvwxgspz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz9rhwden5te0wfjkcctev93xcefwdaexwtcpzdmhxue69uhk7enxvd5xz6tw9ec82c303dhy7r what does the "Broadcast" button do exactly? I was hoping to rebroadcast a post with my new list of preferred relays, but it's not clear if that's what it did (It didn't really look like it).