I’m more than happy to contribute to the basic documentation – well once I’ve got the hang of Sympl.
I think it’s just a question of creating a WiKi account:
https://wiki.sympl.host/w/index.php?title=Special:CreateAccount&returnto=Configuring+DNS
What’s required are some idiots guides akin to the ones here:
https://docs.bytemark.co.uk/?s=adding+a+disc&ht-kb-search=1