It is possible to add custom "user" annotations to a rule, design, or function. It is necessary to write custom code to access user annotations. Only built-in "system" annotations are accessed by the Intent UI; user annotations are accessible through the Intent API. See the Intent API Reference for more information.
The syntax for user annotations is identical to system annotations:
< myUserAnnotationName("My User Annotation String") > _
Rule anyRule as Any = :Anything
System annotations are distinguished by the "%%" prefix in their names. Do not use the "%%" prefix when defining user annotations.