Glossary:Concept group

concept group - set of elements added to a knowledge tree branch associated with a given concept. Each time you add elements, they land in a specific location in the knowledge tree. That location is determined by the element called the hook of the default concept group. Concept groups supersede categories known from earlier SuperMemos. The main difference between concept groups and categories is that the former are associated with concepts that play multiple roles in SuperMemo (starting with SuperMemo 17)