- Specify a value set within a specific clinical domain or documentation situation

- Specify a group of concepts, used for analytics 

- Specify descriptions used for data entry

- Specify the order of data entry items

- Specify the order of search results

- Specify alternative hierarchies for navigation

- Associate inactive components with their  replacements

- Associate components of different types to  support consistent and effective documentation

- Link components to web-resources

- Link components to a textual advice for usage

- Link concepts to a statistical classification to    enable statistical analysis

- Link concepts to legacy data, to support  migration

- Specify a set of reference sets used within a  specific organisational unit

- Specify a set of intensionally defined subsets  used as value sets

- Simple reference sets 

- Ordered reference sets

- Association reference set

- Annotation reference set

- Simple map reference set

- Complex and Extended map reference set

- Simple reference set

- Query Specification reference set