+ '(:value-type :print-formatter :description :short-description :user-name
+ :subobject :hyperlink :hyperlink-parameters :indexed :inverse :unique
+ :sql-name :null-allowed :stored :input-filter :unbound-lookup
+ :value-constraint :void-text :read-only-groups :hidden-groups :unit
+ :disable-predicate :view-type :list-of-values)