- Attributes of this element
- res (string): ID of the resource from which the element was loaded
obs (string): ID of the observation the element belongs to
who (string): ID of the agent the element belongs to - Pointers from this element
- Role: source; valid target elements: ae
Role: target; valid target elements: ae
Role: type; valid target elements: ar-type - Valid child elements
- Valid parent elements
- Layer
- ar-layer
- Annotation type
- one file per observation