diff --git a/jsonschema-core.xml b/jsonschema-core.xml
index 41610a2a..a7ac3fa3 100644
--- a/jsonschema-core.xml
+++ b/jsonschema-core.xml
@@ -3589,6 +3589,68 @@ User-Agent: product-name/5.4.1 so-cool-json-schema/1.0.2 curl/7.43.0
+
+
+ While the presence of references is expected to be transparent
+ to validation results, generative use cases such as code generators
+ and UI renderers often consider references to be semantically significant.
+
+
+ To make such use case-specific semantics explicit, the best practice
+ is to create an annotation keyword can be created for use in the same
+ schema object alongside of a reference keyword such as "$ref".
+
+
+
+ For example, here is a hypothetical keyword for determining
+ whether a code generator should consider the reference
+ target to be a distinct class, and how those classes are related.
+ Note that this example is solely for illustrative purposes, and is
+ not intended to propose a functional code generation keyword.
+
+
+
+
+
+
+ Here, this schema represents some sort of object-oriented class.
+ The first reference in the "allOf" is noted as the base class.
+ The second is not assigned a class relationship, meaning that the
+ code generator should combine the target's definition with this
+ one as if no reference were involved.
+
+
+ Looking at the properties, "foo" is flagged as object composition,
+ while the "date" property is not. It is simply a field with
+ sub-fields, rather than an instance of a distinct class.
+
+
+ This style of usage requires the annotation to be in the same object
+ as the reference, which must be recognizable as a reference.
+
+
+
Thanks to