--- a/devel-scm.rst	Sun Jul 01 11:32:24 2012 +0300
+++ b/devel-scm.rst	Sun Jul 01 15:55:50 2012 +0300
@@ -75,6 +75,11 @@
 
   blocker critical major minor trivial
 
+See:
+
+  http://www.debian.org/Bugs/Developer#severities
+                Severity levels in Debian project.
+
 Priority.
 ---------