-.. License.
-.. http://creativecommons.org/licenses/by/4.0
-.. (c) OPNFV, Ericsson AB and others.
+ License.
+ http://creativecommons.org/licenses/by/4.0
+ (c) OPNFV, Ericsson AB and others.
+
+ Convention for heading levels in Yardstick documentation:
+
+ ======= Heading 0 (reserved for the title in a document)
+ ------- Heading 1
+ ^^^^^^^ Heading 2
+ +++++++ Heading 3
+ ''''''' Heading 4
+
+ Avoid deeper levels because they do not render well.