[MM3-users] List Configuration Attribute Descriptions

Where does one obtain a complete and concise description for all of the list configuration attributes?

From the documentation, it is shown that the REST "config" interface will provide all of the attribute values associated with a particular list. But how does one find a concise description for all of these attributes? For example, I see that there is a list attribute for "default_nonmember_action" and there are two documentation pages for this attribute, but I can't find a concise description of the attribute and the permitted values.

Thanks, Steve