Can you recommend any good documentation on OPNsense NGINX plug-in (WAF rules)?

Hi community,

I'm working with OPNsense NGINX plug-in's WAF rules.

Can you recommend any good documentation on this topic (as there is very little documentation I was able to find)?

For example, how whitelist rules are created in the web interface that will work on one specific site and will not work on others.

Thanks for your help.