diff --git a/src/doc/Data-Model.md b/src/doc/Data-Model.md
index 471339019753211d12b22c327a384ee4ba5d8eff..1819a8c67d84286400e542ef8437e977b90e1b0a 100644
--- a/src/doc/Data-Model.md
+++ b/src/doc/Data-Model.md
@@ -62,4 +62,6 @@ parents are being checked by the Server. Missing obligatory Properties
 invalidate the transaction and result in an error, by default. Missing
 Properties, when they are recommended, result in a warning, but the
 transaction is considered valid. Entities with missing suggested
-Properties are silently accepted as valid.
+Properties are silently accepted as valid. See [the detailed
+specification of RecordTypes](specification/RecordType) for more
+information on importances and inheritance.