I like to play with a variety of religions but there doesn't seem to be a list anywhere of what each religion's rules does, which can screw me over if for example I'm playing as a custom female Eight Divines ruler who doesn't come with a son (because matrilineal marriage isn't allowed). There's no way to foresee this because as far as I can see there is no documentation about what the rules are for each religion. Please tell me I'm mistaken and that these rules are documented somewhere so I can actually understand the game I'm playing.