diff --git a/src/eva2/tools/StringSelection.java b/src/eva2/tools/StringSelection.java
index 2c41b90d..ecb6cbed 100644
--- a/src/eva2/tools/StringSelection.java
+++ b/src/eva2/tools/StringSelection.java
@@ -18,25 +18,28 @@ import eva2.gui.BeanInspector;
 public class StringSelection implements Serializable {
 	private static final long serialVersionUID = -1512329288445831907L;
 	private String[] strObjects;
+	private String[] toolTips;
 	boolean[] selStates;
 	private transient HashMap<String,Integer> stringToIndexHash = null;
 	private transient Class<? extends Enum> enumClass = null;
 	
-	public StringSelection(String[] sArr) {
+	public StringSelection(String[] sArr, String[] tips) {
 		strObjects = sArr;
+		toolTips=tips;
 		selStates=new boolean[sArr.length];
 		stringToIndexHash = null;
 		enumClass = null;
 	}	
 	
-	public StringSelection(String[] sArr, int initialSel) {
-		this(sArr);
+	public StringSelection(String[] sArr, String[] tips, int initialSel) {
+		this(sArr, tips);
 		if (initialSel<getLength()) setSelected(initialSel, true);
 		enumClass = null;
 	}
 	
-	public StringSelection(Enum<?> e) {
+	public StringSelection(Enum<?> e, String[] tips) {
 		strObjects = new String[e.getClass().getEnumConstants().length];
+		toolTips=tips;
 		selStates = new boolean[strObjects.length];
 		for (int i = 0; i < strObjects.length; i++) {
 			strObjects[i] = e.getClass().getEnumConstants()[i].toString();
@@ -49,6 +52,7 @@ public class StringSelection implements Serializable {
 	public StringSelection(StringSelection stringSelection) {
 		strObjects = stringSelection.strObjects.clone();
 		selStates = stringSelection.selStates.clone();
+		toolTips = stringSelection.toolTips.clone();
 		stringToIndexHash = null;
 		enumClass = stringSelection.enumClass;
 	}
@@ -60,9 +64,10 @@ public class StringSelection implements Serializable {
 	 * @param e
 	 * @param headerFields
 	 */
-	public StringSelection(Enum<?> e,
-			List<String> headerFields) {
-		this(ToolBox.appendEnumAndArray(e, headerFields.toArray(new String[headerFields.size()])));
+	public StringSelection(Enum<?> e, String[] enumTips,
+			List<String> headerFields, String[] addTips) {
+		this(ToolBox.appendEnumAndArray(e, headerFields.toArray(new String[headerFields.size()])),
+				ToolBox.appendArrays(enumTips, addTips));
 		enumClass = e.getClass();
 	}
 
@@ -78,6 +83,11 @@ public class StringSelection implements Serializable {
 		return strObjects[i];
 	}
 	
+	public String getElementInfo(int i) {
+		if (toolTips!=null && (toolTips.length>i)) return toolTips[i];
+		else return null;
+	}
+	
 	public String[] getStrings() {
 		return strObjects;
 	}
diff --git a/src/eva2/tools/ToolBox.java b/src/eva2/tools/ToolBox.java
index 65931dc5..0c5c73f4 100644
--- a/src/eva2/tools/ToolBox.java
+++ b/src/eva2/tools/ToolBox.java
@@ -29,19 +29,44 @@ public class ToolBox {
 		return ret;
 	}
 	
+	/**
+	 * Append two String arrays. If both are null, null is returned.
+	 * 
+	 * @param strArr1
+	 * @param strArr2
+	 * @return
+	 */
 	public static String[] appendArrays(String[] strArr1,
 			String[] strArr2) {
+		if (strArr1==null) return strArr2;
+		if (strArr2==null) return strArr1;
 		String[] ret = new String[strArr1.length + strArr2.length];
 		System.arraycopy(strArr1, 0, ret, 0, strArr1.length);
 		System.arraycopy(strArr2, 0, ret, strArr1.length, strArr2.length);
 		return ret;
 	}	
 	
-	public static Object[] appendArrays(Object[] strArr1,
-			Object[] strArr2) {
-		Object[] ret = new Object[strArr1.length + strArr2.length];
+	public static String[] appendArrays(String[] strArr1,
+			String str) {
+		String[] ret = new String[strArr1.length+1];
 		System.arraycopy(strArr1, 0, ret, 0, strArr1.length);
-		System.arraycopy(strArr2, 0, ret, strArr1.length, strArr2.length);
+		ret[ret.length-1]=str;
+		return ret;
+	}
+
+	public static Object[] appendArrays(Object[] objArr1,
+			Object o) {
+		Object[] ret = new Object[objArr1.length + 1];
+		System.arraycopy(objArr1, 0, ret, 0, objArr1.length);
+		ret[ret.length-1]=o;
+		return ret;
+	}
+
+	public static Object[] appendArrays(Object[] objArr1,
+			Object[] objArr2) {
+		Object[] ret = new Object[objArr1.length + objArr2.length];
+		System.arraycopy(objArr1, 0, ret, 0, objArr1.length);
+		System.arraycopy(objArr2, 0, ret, objArr1.length, objArr2.length);
 		return ret;
 	}