diff --git a/DOL-terms.rdf b/DOL-terms.rdf
index de42e38..d0d8636 100644
--- a/DOL-terms.rdf
+++ b/DOL-terms.rdf
@@ -1250,13 +1250,29 @@ relation has been explicitly specified; when $c$ is omitted, it defaults to 1.
syntactically valid DOL expression denoting an OMS that is built from smaller OMS as building blocks.
-
- default mapping
+
+ default logic mapping
+
true
logic mapping that will be chosen by default if only the source and target logic are given
+
+ default language mapping
+
+
+ true
+ language mapping that will be chosen by default if only the source and target language are given
+
+
+
+ default mapping
+
+ true
+ mapping that will be chosen by default if only the source and target are given
+
+
definitional extension