diff --git a/DMARC-how-to.md b/DMARC-how-to.md
index 5e48eb3..35f3e42 100644
--- a/DMARC-how-to.md
+++ b/DMARC-how-to.md
@@ -1,8 +1,10 @@
+# Table of contents
+
 # Introduction
-This how to is created by the Dutch Internet Standards Platform (the organization behind [internet.nl](https://internet.nl)) and is meant to provide practical information and guidance on implementing DMARC.
+This how-to is created by the Dutch Internet Standards Platform (the organization behind [internet.nl](https://internet.nl)) and is meant to provide practical information and guidance on implementing DMARC.
 
 # What is DMARC?
-to-do. 
+DMARC is short for **D**omain based **M**essage **A**uthentication, **R**eporting and **C**onformance and is described in...
 
 # Why use DMARC?
-to-do.
\ No newline at end of file
+to-do.