diff --git a/src/graph/interfaces.py b/src/graph_ZCA/interfaces.py
copy from src/graph/interfaces.py
copy to src/graph_ZCA/interfaces.py
--- a/src/graph/interfaces.py
+++ b/src/graph_ZCA/interfaces.py
@@ -11,8 +11,12 @@ class IBaseAdapter(Interface):
         Gets an Object to be adapted
         """
 
+class IBaseComponent(Interface):
+    """
+    All Interfaces derived from this class are marking a Class to be a component of this framework.
+    """
 
-class IAxis(Interface):
+class IAxis(IBaseComponent):
     """
     Axis interface
     """
@@ -21,17 +25,17 @@ class IAxis(Interface):
         createed with knowledge of its parent component
         """
 
-class ITickLabelAdapter(Interface):
+class ITickLabelAdapter(IBaseComponent):
     """
     An adapter that produces tick labels for an axis
     """
 
-class IViewBox(Interface):
+class IViewBox(IBaseComponent):
     """
     Container to display some components
     """
 
-class IImage(Interface):
+class IImage(IBaseComponent):
     """
     Some xy data
     """