diff --git a/README.md b/README.md
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--- a/README.md
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@@ -1,2 +1,14 @@
 # Containers
+
 Various Docker and Singularity containers.
+
+Hierarchy:
+
+- Base
+  - X11Web
+     - MinimalDesktop
+       - BasicDesktop
+         - ViaLacteaVisualAnalytics
+  - JupyterNotebook
+  - SSH
+    - XCalc
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