Where are proto dhcp and proto dhcpv6 (UCI) documented?

It's understandable that everything possible in /etc/config/network isn't on a single wiki page. However in breaking it into multiple pages the basic dhcp protocols got lost.

There is this "basics" page
and this one is linked to the UCI pages, it is seems like either a previous or later version of the page above.
then also this page about WAN-specific protocols, but not including dhcp or dhcpv6.

Does anyone know of more pages or can work to extend this so that dhcp is documented?