diff --git a/09-legislature/09-01-bills.md b/09-legislature/09-01-bills.md
index 20a3718..2e3cba5 100644
--- a/09-legislature/09-01-bills.md
+++ b/09-legislature/09-01-bills.md
@@ -16,7 +16,7 @@ A pripola bill must pass the Legislative Process in order to enter the body of a
 
 A separate category of legislation, known as "Advisory Standards", exists to enable the legislature to recommend normative codes of behaviour to be ***optionally*** adopted by the private sector as policy for the management of externality-fraught enterprises and enterprises which are difficult to co-ordinate. Advisory Standard Bills must go through the same Legislative Process as `Pripola` bills in order to enter the body of Adopted Advisory Standards.
 
-## Required metrics
+## Obsolescence mechanisms:
 
 ### Metrics for effectiveness