diff --git a/readme.md b/readme.md
index 703f4d5..863a8d8 100644
--- a/readme.md
+++ b/readme.md
@@ -4,12 +4,13 @@ Intro.
 
 ## Table Of Contents {#toc}
 
-* [Why](#why)
-* [How](#how)
-* [What](#what)
-* [Who](#who)
-* [Where](#where)
-* [When](#when)
+* 1 [Why](#why)
+* 2 [How](#how)
+* 3 [What](#what)
+* 4 [Who](#who)
+  * 4.1 [Author](#author)
+* 5 [Where](#where)
+* 6 [When](#when)
 
 ## 1 [Why](#toc) {#why}