You can use the CREATE, DELETE, SET and SHOW directives
 with the Superior Reference entity.

 The CREATE and DELETE directives are used to create and delete a
 Superior Reference entity.

 The SET and SHOW directives are used to set or display the Superior
 Reference characteristic attribute, respectively.

 Note that the only characteristic attribute of the Superior Reference
 entity is single valued. The ADD and REMOVE directives can therefore
 only be used to remove the single value, or to add a value if there is
 no existing value.