--- a/relpipe-data/index.xml	Sat Nov 24 01:04:18 2018 +0100
+++ b/relpipe-data/index.xml	Sat Nov 24 16:39:04 2018 +0100
@@ -10,6 +10,37 @@
 		<p>
 			The world is relational!
 		</p>
+		
+		<m:diagram orientace="vodorovně">
+			compound=true;
+			node[shape=box];
+			
+			subgraph cluster_in {
+			label = "Inputs:";
+			cli;
+			fstab;
+			}
+			
+			subgraph cluster_tr {
+			label = "Transformations:";
+			grep;
+			sed;
+			}
+			
+			subgraph cluster_out {
+			label = "Outputs:";
+			xml;
+			tabular;
+			gui;
+			}
+			
+			cli -> grep  [ltail=cluster_in, lhead=cluster_tr];
+			grep -> xml [ltail=cluster_tr, lhead=cluster_out];
+			// cli -> xml [ltail=cluster_in, lhead=cluster_out];
+			
+		</m:diagram>
+
+		
 	</text>
 
 </stránka>