diff --git a/src/org/oscim/core/TagSet.java b/src/org/oscim/core/TagSet.java
index 69452889..d931c733 100644
--- a/src/org/oscim/core/TagSet.java
+++ b/src/org/oscim/core/TagSet.java
@@ -14,6 +14,8 @@
  */
 package org.oscim.core;
 
+import java.util.Arrays;
+
 
 public class TagSet {
 	public static TagSet EMPTY_TAG_SET = new TagSet();
@@ -33,6 +35,15 @@ public class TagSet {
 		numTags = 0;
 	}
 
+	/**
+	 * null out current tags
+	 * @param nulltags ...
+	 */
+	public void clear(boolean nulltags) {
+		Arrays.fill(tags, null);
+		numTags = 0;
+	}
+
 	public Tag[] asArray(){
 		Tag[] result = new Tag[numTags];
 		System.arraycopy(tags, 0, result, 0, numTags);