Index: lams_common/src/java/org/lamsfoundation/lams/learningdesign/Activity.java
===================================================================
RCS file: /usr/local/cvsroot/lams_common/src/java/org/lamsfoundation/lams/learningdesign/Activity.java,v
diff -u -r1.38 -r1.39
--- lams_common/src/java/org/lamsfoundation/lams/learningdesign/Activity.java	13 Jan 2006 04:24:14 -0000	1.38
+++ lams_common/src/java/org/lamsfoundation/lams/learningdesign/Activity.java	17 Feb 2006 02:01:23 -0000	1.39
@@ -799,4 +799,18 @@
 	 */
    public abstract Activity createCopy();
 
+   
+   // ---------------------------------------------------------------------
+   // Data Validation methods
+   //---------------------------------------------------------------------
+   
+   /**
+	 * Validate activity
+	 * 
+	 */
+	public String validateActivity() { 
+		return null; 
+	}
+   
+   
 }
\ No newline at end of file