級 (Web Annotation)

[1] Web Annotation Data Model (2017-02-24 02:14:26 +09:00) <https://w3c.github.io/web-annotation/model/wd2/#dfn-class>

Class
Resources may be divided, conceptually, into groups called "classes"; members of a class are known as Instances of the class. Resources are associated with a particular class through typing. Classes are identified by IRIs, i.e., they are also Web Resources themselves.

[2] Selectors and States (2017-02-24 02:14:26 +09:00) <https://w3c.github.io/web-annotation/selector-note/#dfn-class>

Class
Resources may be divided, conceptually, into groups called "classes"; members of a class are known as Instances of that class. Resources are associated with a particular class through typing. Classes are identified by IRIs, i.e., they are also Web Resources themselves.