diff --git a/README.md b/README.md
index d47c686..4e75aed 100644
--- a/README.md
+++ b/README.md
@@ -3,11 +3,25 @@ _DRAFT Revision_
 
 [**Read online at GitBook**](https://adidas-group.gitbooks.io/api-guidelines/content/)
 
+![](/assets/layers.png)
+
+
 ---
 
-These Guidelines are available for online reading at [GitBook](https://apidesigner.gitbooks.io/adidas-api-guidelines/content/). The source can be found on [GitHub](https://github.com/adidas-group/api-guidelines). 
+These Guidelines are available for online reading at [GitBook](https://apidesigner.gitbooks.io/adidas-api-guidelines/content/). The source can be found on [GitHub](https://github.com/adidas-group/api-guidelines).
 
-https://www.ietf.org/rfc/rfc2119.txt
+
+The CAPITALIZED words throughout these guidelines have a special meaning:
+
+> ```
+> The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
+> "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in 
+> this document are to be interpreted as described in RFC2119.
+```
+
+Refer to [RFC2119](https://www.ietf.org/rfc/rfc2119) for details.
+
+The CAPITALIZED words throughout the guidelines are taken from . 
 
 ---
 
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