diff --git a/src/fr/inrialpes/exmo/align/gen/DiscriminantGenerator.java b/src/fr/inrialpes/exmo/align/gen/DiscriminantGenerator.java
index e0c00201fc96bcd92a9f45678fc9d7f81c223d03..baa26df5324ec81a2b35d98f6366a86b96a3e785 100644
--- a/src/fr/inrialpes/exmo/align/gen/DiscriminantGenerator.java
+++ b/src/fr/inrialpes/exmo/align/gen/DiscriminantGenerator.java
@@ -29,6 +29,14 @@ package fr.inrialpes.exmo.align.gen;
 
 import java.util.Properties;
 
+/**
+ * This class serves as an example for systematically generating the
+ * alteration space at a particular resolution.
+ * It could be generalised by:
+ * - using an arbitrary number of dimensions (instead of 3)
+ * - having a different step on each dimention
+ * All this could be achieved by using the parameters which could be Alterator/Step
+ */
 public class DiscriminantGenerator extends TestSet {
 
     public void initTestCases( Properties params ) {