diff --git a/org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/annotations/HistReference.java b/org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/annotations/HistReference.java
new file mode 100644
index 0000000..5273fad
--- /dev/null
+++ b/org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/annotations/HistReference.java
@@ -0,0 +1,15 @@
+package org.eclipse.osbp.runtime.common.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * If true, then the historized record of historized ref target will be read. The current record is read if omitted. 
+ */
+@Target(ElementType.FIELD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface HistReference {
+
+}
diff --git a/org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/event/IDualData.java b/org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/event/IDualData.java
index 3f234ef..804d2f9 100644
--- a/org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/event/IDualData.java
+++ b/org.eclipse.osbp.runtime.common/src/org/eclipse/osbp/runtime/common/event/IDualData.java
@@ -27,13 +27,6 @@
 	 */
 	void asString(boolean isString);
 	/**
-	 * Equals.
-	 *
-	 * @param item the item
-	 * @return true, if successful
-	 */
-	boolean equals(IDualData item);
-	/**
 	 * Gets the selection value.
 	 *
 	 * @return the selection value