Finding documentation for Domain Mapping and TOC Plugins

I have been using the Domain Mapping plugin for years. This month I am reviewing my sites and updating. The Domain Mapping Plugin is one I will update however I always check available documentation before I update. This seems to me to be a foolish question but I can not find any documentation in the downloaded Zip files or at Wpmudev for Domain Mapping and the Terms of Service Plugins. Please assist and have a great day.