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diff --git a/lib/DBIx/Class/Relationship.pm b/lib/DBIx/Class/Relationship.pm
index 9edd7af..cd4b6cd 100644
--- a/lib/DBIx/Class/Relationship.pm
+++ b/lib/DBIx/Class/Relationship.pm
@@ -271,6 +271,11 @@ pass C<< cascade_delete => 0 >> in the C<$attr> hashref. However, any
 database-level cascade or restrict will take precedence over a
 DBIx-Class-based cascading delete.
 
+If you copy an object in a class with a C<has_many> relationship, all
+the related objects will be copied as well. To turn this behaviour off,
+pass C<cascade_copy => 0 > in the C<$attr> hashref. The behaviour
+defaults to C<cascade_copy => 1>.
+
 See L<DBIx::Class::Relationship::Base> for documentation on relationship
 methods and valid relationship attributes.