What an annotation does when the user points at it, for the shell's cursor and the keyboard.
public enum AnnotationRole
Spec #33 viewer capability 6.
kind:method, kind:property, kind:ctor. Press Esc to clear.AnnotationAny other annotation: it can be selected, its note read and, unless locked, moved or deleted.FieldA widget of an interactive form field (§12.5.6.19): activating it focuses or toggles the field.LinkA link annotation (ISO 32000-2 §12.5.6.5): activating it raises ActionRequested.