diff --git a/docs/classDiagram.md b/docs/classDiagram.md
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 # Class diagrams
 
+**Edit this Page** [![N|Solid](img/GitHub-Mark-32px.png)](https://github.com/mermaid-js/mermaid/blob/develop/docs/classDiagram.md)
+
 > "In software engineering, a class diagram in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects."
 > Wikipedia