*machine input+*right+*referred to by+*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 *machine input+*right+*referred to by+*children+*children Cards formed by "mating" *machine input+*right+*referred to by+*children with another card. eg: "*machine input+*right+*referred to by+*children+mate".