Doug Cox+*mates+*self+*self+*children Search Toggle navigation activity Toggle Dropdown history discuss follow editors rules Toggle Dropdown common by group by name recent edit Toggle Dropdown content name type refresh children mates references out references in Doug Cox+*mates+*self+*self+*children+*children Cards formed by "mating" Doug Cox+*mates+*self+*self+*children with another card. eg: "Doug Cox+*mates+*self+*self+*children+mate".