diff --git a/corpus/test.langexp b/corpus/test.langexp
index 8ccfd9b..55cf5f9 100644
--- a/corpus/test.langexp
+++ b/corpus/test.langexp
@@ -219,7 +219,8 @@ parse_number : Unit! = {
   bring ();
 }
 
-( & ) <-| 'a <-| 'b |-> 'x |-> 'y = (<-| 'a := |-> 'x) && (<-| 'b := |-> 'y);
+: example of or_in and or_out usage for template operators
+( & ) |-> 'a |-> 'b <-| 'x <-| 'y = (|-> 'a := <-| 'x) && (|-> 'b := <-| 'y);
 
 --------------------------------------------------------------------------------
 
@@ -1184,6 +1185,8 @@ parse_number : Unit! = {
         (unit_literal))))
   (empty_lines)
   (function_definition
+    (definition_info
+      (info))
     (operator)
     (argument_name_identifier)
     (argument_name_identifier)