If you're looking for software to create these events, Alexandria would be it.
We use Asciidoc, and parse off of the `=` headings:
https://alexandria.gitcitadel.eu/publication/naddr/naddr1qvzqqqr4tqp...
For the Alexandria link, you can see how the event is constructed with our event viewer:
https://alexandria.gitcitadel.eu/events?id=nevent1qvzqqqr4tqpzphzv6zrv6l89kxpj4h60m5fpz2ycsrfv0c54hjcwdpxqrt8wwlqxqyvhwumn8ghj7enjv4jkccte9eek7anzd96zu6r0wd6qzxmhwden5te0w35x2cmfw3skgetv9ehx7um5wgcjucm0d5q35amnwvaz7tm5dpjkvmmjv4ehgtnwdaehgu339e3k7mgpzpmhxue69uhkummnw3ezumrpdejqzyrhwden5te0dehhxarj9emkjmn9qythwumn8ghj7mn0wd68ytnndamxy6t59e5x7um5qyghwumn8ghj7mn0wd68yv339e3k7mgqypyr6h4uzgw8vf9f4pzs7d9p7wvs6ayqnr6u5uhlmdcc52vy2uwaky3k5zn
Where the index "Publishing on Alexandria" points to the sections "video tutorial" and "text tutorial".
```
["a", "30041:dc4cd086cd7ce5b1832adf4fdd1211289880d2c7e295bcb0e684c01acee77c06:video-tutorial"],
["a",30041:dc4cd086cd7ce5b1832adf4fdd1211289880d2c7e295bcb0e684c01acee77c06:text-tutorial"]
```
https://alexandria.gitcitadel.eu/events?id=nevent1qvzqqqr4tqpzphzv6zrv6l89kxpj4h60m5fpz2ycsrfv0c54hjcwdpxqrt8wwlqxqyvhwumn8ghj7enjv4jkccte9eek7anzd96zu6r0wd6qzxmhwden5te0w35x2cmfw3skgetv9ehx7um5wgcjucm0d5q35amnwvaz7tm5dpjkvmmjv4ehgtnwdaehgu339e3k7mgpzpmhxue69uhkummnw3ezumrpdejqzyrhwden5te0dehhxarj9emkjmn9qythwumn8ghj7mn0wd68ytnndamxy6t59e5x7um5qyghwumn8ghj7mn0wd68yv339e3k7mgqypyr6h4uzgw8vf9f4pzs7d9p7wvs6ayqnr6u5uhlmdcc52vy2uwaky3k5zn
Where the index "Publishing on Alexandria" points to the sections "video tutorial" and "text tutorial".
```
["a", "30041:dc4cd086cd7ce5b1832adf4fdd1211289880d2c7e295bcb0e684c01acee77c06:video-tutorial"],
["a",30041:dc4cd086cd7ce5b1832adf4fdd1211289880d2c7e295bcb0e684c01acee77c06:text-tutorial"]
```
