diff --git a/src/main/java/li/strolch/model/AbstractStrolchElement.java b/src/main/java/li/strolch/model/AbstractStrolchElement.java
index 464c0b01a..3bff1ca58 100644
--- a/src/main/java/li/strolch/model/AbstractStrolchElement.java
+++ b/src/main/java/li/strolch/model/AbstractStrolchElement.java
@@ -44,6 +44,19 @@ public abstract class AbstractStrolchElement implements StrolchElement {
 		//
 	}
 
+	/**
+	 * Default constructor
+	 * 
+	 * @param id
+	 *            id of this {@link StrolchElement}
+	 * @param name
+	 *            name of this {@link StrolchElement}
+	 */
+	public AbstractStrolchElement(String id, String name) {
+		setId(id);
+		setName(name);
+	}
+
 	@Override
 	public long getDbid() {
 		return this.dbid;
diff --git a/src/main/java/li/strolch/model/GroupedParameterizedElement.java b/src/main/java/li/strolch/model/GroupedParameterizedElement.java
index aa381dd6c..919756ff0 100644
--- a/src/main/java/li/strolch/model/GroupedParameterizedElement.java
+++ b/src/main/java/li/strolch/model/GroupedParameterizedElement.java
@@ -46,20 +46,21 @@ public abstract class GroupedParameterizedElement extends AbstractStrolchElement
 	protected String type;
 
 	/**
-	 * Default constructor
+	 * Empty constructor
 	 */
 	protected GroupedParameterizedElement() {
 		//
 	}
 
 	/**
+	 * Default Constructor
+	 * 
 	 * @param id
 	 * @param name
 	 * @param type
 	 */
 	protected GroupedParameterizedElement(String id, String name, String type) {
-		setId(id);
-		setName(name);
+		super(id, name);
 		setType(type);
 	}
 
@@ -82,8 +83,8 @@ public abstract class GroupedParameterizedElement extends AbstractStrolchElement
 	}
 
 	/**
-	 * Returns the {@link Parameter} with the given key from the {@link ParameterBag} with the given bagKey, or
-	 * null if the {@link Parameter} or the {@link ParameterBag} does not exist
+	 * Returns the {@link Parameter} with the given key from the {@link ParameterBag} with the given bagKey, or null if
+	 * the {@link Parameter} or the {@link ParameterBag} does not exist
 	 * 
 	 * @param bagKey
 	 *            the key of the {@link ParameterBag} from which the {@link Parameter} is to be returned
@@ -186,17 +187,17 @@ public abstract class GroupedParameterizedElement extends AbstractStrolchElement
 	}
 
 	/**
-	 * Returns true if the {@link Parameter} with the given paramKey exists on the {@link ParameterBag} with the
-	 * given bagKey
+	 * Returns true if the {@link Parameter} with the given paramKey exists on the {@link ParameterBag} with the given
+	 * bagKey
 	 * 
 	 * @param bagKey
 	 *            the key of the {@link ParameterBag} on which to find the {@link Parameter}
 	 * @param paramKey
 	 *            the key of the {@link Parameter} to be found
 	 * 
-	 * @return true if the {@link Parameter} with the given paramKey exists on the {@link ParameterBag} with the
-	 *         given bagKey. False is returned if the {@link ParameterBag} does not exist, or the
-	 *         {@link Parameter} does not exist on the {@link ParameterBag}
+	 * @return true if the {@link Parameter} with the given paramKey exists on the {@link ParameterBag} with the given
+	 *         bagKey. False is returned if the {@link ParameterBag} does not exist, or the {@link Parameter} does not
+	 *         exist on the {@link ParameterBag}
 	 */
 	public boolean hasParameter(String bagKey, String paramKey) {
 		if (this.parameterBagMap == null)
diff --git a/src/main/java/li/strolch/model/Locator.java b/src/main/java/li/strolch/model/Locator.java
index 3942c6aab..893440eb7 100644
--- a/src/main/java/li/strolch/model/Locator.java
+++ b/src/main/java/li/strolch/model/Locator.java
@@ -55,6 +55,9 @@ public class Locator {
 	 */
 	public static final String PATH_SEPARATOR = "/";
 
+	/**
+	 * {@link List} of path elements, with the first being the top level or root element
+	 */
 	private final List<String> pathElements;
 
 	/**
diff --git a/src/main/java/li/strolch/model/Order.java b/src/main/java/li/strolch/model/Order.java
index aa35ab08d..3e3d880cd 100644
--- a/src/main/java/li/strolch/model/Order.java
+++ b/src/main/java/li/strolch/model/Order.java
@@ -54,7 +54,7 @@ public class Order extends GroupedParameterizedElement {
 	}
 
 	/**
-	 * Default constructor for an {@link Order}
+	 * Default Constructor
 	 * 
 	 * @param id
 	 * @param name
@@ -68,7 +68,7 @@ public class Order extends GroupedParameterizedElement {
 	}
 
 	/**
-	 * Constructor with date and {@link State}
+	 * Extended Constructor for date and {@link State}
 	 * 
 	 * @param id
 	 * @param name
@@ -84,7 +84,7 @@ public class Order extends GroupedParameterizedElement {
 	}
 
 	/**
-	 * From DOM Constructor
+	 * DOM Constructor
 	 * 
 	 * @param element
 	 */
diff --git a/src/main/java/li/strolch/model/ParameterBag.java b/src/main/java/li/strolch/model/ParameterBag.java
index 2c7c290ec..b110fc3af 100644
--- a/src/main/java/li/strolch/model/ParameterBag.java
+++ b/src/main/java/li/strolch/model/ParameterBag.java
@@ -31,7 +31,7 @@ public class ParameterBag extends ParameterizedElement {
 	private static final long serialVersionUID = 1L;
 
 	/**
-	 * Constructor for special cases
+	 * Empty Constructor
 	 */
 	public ParameterBag() {
 		// 
@@ -49,7 +49,7 @@ public class ParameterBag extends ParameterizedElement {
 	}
 
 	/**
-	 * Constructor from DOM
+	 * DOM Constructor
 	 * 
 	 * @param bagElement
 	 */
diff --git a/src/main/java/li/strolch/model/ParameterizedElement.java b/src/main/java/li/strolch/model/ParameterizedElement.java
index 1c9585c7e..c0f7e6638 100644
--- a/src/main/java/li/strolch/model/ParameterizedElement.java
+++ b/src/main/java/li/strolch/model/ParameterizedElement.java
@@ -54,13 +54,15 @@ public abstract class ParameterizedElement extends AbstractStrolchElement {
 	protected String type;
 
 	/**
-	 * Empty constructor
+	 * Empty Constructor
 	 */
 	protected ParameterizedElement() {
 		//
 	}
 
 	/**
+	 * Default Constructor
+	 * 
 	 * @param id
 	 * @param name
 	 * @param type
diff --git a/src/main/java/li/strolch/model/Resource.java b/src/main/java/li/strolch/model/Resource.java
index 41e920777..09d1718d9 100644
--- a/src/main/java/li/strolch/model/Resource.java
+++ b/src/main/java/li/strolch/model/Resource.java
@@ -28,7 +28,6 @@ import org.dom4j.tree.DefaultElement;
 
 /**
  * @author Robert von Burg <eitch@eitchnet.ch>
- * 
  */
 public class Resource extends GroupedParameterizedElement {
 
@@ -37,13 +36,14 @@ public class Resource extends GroupedParameterizedElement {
 
 	/**
 	 * Empty constructor
-	 * 
 	 */
-	protected Resource() {
-		super();
+	public Resource() {
+		//
 	}
 
 	/**
+	 * Default constructor
+	 * 
 	 * @param id
 	 * @param name
 	 * @param type
@@ -53,6 +53,8 @@ public class Resource extends GroupedParameterizedElement {
 	}
 
 	/**
+	 * DOM Constructor
+	 * 
 	 * @param element
 	 */
 	public Resource(Element element) {
diff --git a/src/main/java/li/strolch/model/State.java b/src/main/java/li/strolch/model/State.java
index c192191f7..6fc4b0b99 100644
--- a/src/main/java/li/strolch/model/State.java
+++ b/src/main/java/li/strolch/model/State.java
@@ -23,21 +23,23 @@ package li.strolch.model;
 
 /**
  * @author Robert von Burg <eitch@eitchnet.ch>
- * 
  */
 public enum State {
 
-	CREATED("Created"),
-	OPEN("Open"),
-	EXECUTION("Execution"),
-	CLOSED("Closed");
+	CREATED("Created"), OPEN("Open"), EXECUTION("Execution"), CLOSED("Closed");
 
 	private String state;
 
+	/**
+	 * @param state
+	 */
 	private State(String state) {
 		this.state = state;
 	}
 
+	/**
+	 * @return
+	 */
 	public String getStateName() {
 		return this.state;
 	}
diff --git a/src/main/java/li/strolch/model/parameter/AbstractParameter.java b/src/main/java/li/strolch/model/parameter/AbstractParameter.java
index 208254e39..0430c4c35 100644
--- a/src/main/java/li/strolch/model/parameter/AbstractParameter.java
+++ b/src/main/java/li/strolch/model/parameter/AbstractParameter.java
@@ -48,6 +48,23 @@ public abstract class AbstractParameter<T> extends AbstractStrolchElement implem
 
 	protected ParameterizedElement parent;
 
+	/**
+	 * Empty constructor
+	 */
+	protected AbstractParameter() {
+		//
+	}
+
+	/**
+	 * Default constructor
+	 * 
+	 * @param id
+	 * @param name
+	 */
+	public AbstractParameter(String id, String name) {
+		super(id, name);
+	}
+
 	@Override
 	public boolean isHidden() {
 		return this.hidden;
diff --git a/src/main/java/li/strolch/model/parameter/BooleanParameter.java b/src/main/java/li/strolch/model/parameter/BooleanParameter.java
index bb0f05215..50561f33d 100644
--- a/src/main/java/li/strolch/model/parameter/BooleanParameter.java
+++ b/src/main/java/li/strolch/model/parameter/BooleanParameter.java
@@ -35,18 +35,31 @@ public class BooleanParameter extends AbstractParameter<Boolean> {
 
 	public static final String TYPE = "Boolean";
 	private static final long serialVersionUID = 0L;
-	
+
 	private Boolean value = Boolean.FALSE;
 
 	/**
 	 * Empty constructor
-	 * 
 	 */
 	public BooleanParameter() {
 		//
 	}
 
 	/**
+	 * Default constructors
+	 * 
+	 * @param id
+	 * @param name
+	 * @param value
+	 */
+	public BooleanParameter(String id, String name, Boolean value) {
+		super(id, name);
+		setValue(value);
+	}
+
+	/**
+	 * DOM Constructor
+	 * 
 	 * @param element
 	 */
 	public BooleanParameter(Element element) {
@@ -60,17 +73,6 @@ public class BooleanParameter extends AbstractParameter<Boolean> {
 		setValue(Boolean.valueOf(valueS));
 	}
 
-	/**
-	 * @param id
-	 * @param name
-	 * @param value
-	 */
-	public BooleanParameter(String id, String name, Boolean value) {
-		setId(id);
-		setName(name);
-		setValue(value);
-	}
-
 	@Override
 	public String getValueAsString() {
 		return this.value.toString();
diff --git a/src/main/java/li/strolch/model/parameter/DateParameter.java b/src/main/java/li/strolch/model/parameter/DateParameter.java
index e0c677934..d40d17d89 100644
--- a/src/main/java/li/strolch/model/parameter/DateParameter.java
+++ b/src/main/java/li/strolch/model/parameter/DateParameter.java
@@ -42,13 +42,27 @@ public class DateParameter extends AbstractParameter<Long> {
 	private Long value;
 
 	/**
-	 * Default constructor
+	 * Empty constructor
 	 */
 	public DateParameter() {
 		//
 	}
 
 	/**
+	 * Default Constructor
+	 * 
+	 * @param id
+	 * @param name
+	 * @param value
+	 */
+	public DateParameter(String id, String name, Long value) {
+		super(id, name);
+		setValue(value);
+	}
+
+	/**
+	 * DOM Constructor
+	 * 
 	 * @param element
 	 */
 	public DateParameter(Element element) {
@@ -62,17 +76,6 @@ public class DateParameter extends AbstractParameter<Long> {
 		setValue(Long.valueOf(valueS));
 	}
 
-	/**
-	 * @param id
-	 * @param name
-	 * @param value
-	 */
-	public DateParameter(String id, String name, Long value) {
-		setId(id);
-		setName(name);
-		setValue(value);
-	}
-
 	@Override
 	public String getValueAsString() {
 		// TODO the format should be globally configured
diff --git a/src/main/java/li/strolch/model/parameter/FloatParameter.java b/src/main/java/li/strolch/model/parameter/FloatParameter.java
index 903eadc88..07a22dda9 100644
--- a/src/main/java/li/strolch/model/parameter/FloatParameter.java
+++ b/src/main/java/li/strolch/model/parameter/FloatParameter.java
@@ -41,13 +41,27 @@ public class FloatParameter extends AbstractParameter<Double> {
 
 	/**
 	 * Empty constructor
-	 * 
 	 */
 	public FloatParameter() {
 		//
 	}
 
 	/**
+	 * Default constructor
+	 * 
+	 * @param id
+	 * @param name
+	 * @param value
+	 */
+	public FloatParameter(String id, String name, Double value) {
+		super(id, name);
+
+		setValue(value);
+	}
+
+	/**
+	 * DOM Constructor
+	 * 
 	 * @param element
 	 */
 	public FloatParameter(Element element) {
@@ -61,17 +75,6 @@ public class FloatParameter extends AbstractParameter<Double> {
 		setValue(Double.valueOf(valueS));
 	}
 
-	/**
-	 * @param id
-	 * @param name
-	 * @param value
-	 */
-	public FloatParameter(String id, String name, Double value) {
-		setId(id);
-		setName(name);
-		setValue(value);
-	}
-
 	@Override
 	public String getValueAsString() {
 		return Double.toString(this.value);
diff --git a/src/main/java/li/strolch/model/parameter/IntegerParameter.java b/src/main/java/li/strolch/model/parameter/IntegerParameter.java
index a2fcc7414..ce3529af1 100644
--- a/src/main/java/li/strolch/model/parameter/IntegerParameter.java
+++ b/src/main/java/li/strolch/model/parameter/IntegerParameter.java
@@ -40,14 +40,27 @@ public class IntegerParameter extends AbstractParameter<Integer> {
 	private Integer value = Integer.MAX_VALUE;
 
 	/**
-	 * Default constructor
-	 * 
+	 * Empty constructor
 	 */
 	public IntegerParameter() {
 		//
 	}
 
 	/**
+	 * Default constructor
+	 * 
+	 * @param id
+	 * @param name
+	 * @param value
+	 */
+	public IntegerParameter(String id, String name, Integer value) {
+		super(id, name);
+		setValue(value);
+	}
+
+	/**
+	 * DOM Constructor
+	 * 
 	 * @param element
 	 */
 	public IntegerParameter(Element element) {
@@ -61,17 +74,6 @@ public class IntegerParameter extends AbstractParameter<Integer> {
 		setValue(Integer.valueOf(valueS));
 	}
 
-	/**
-	 * @param id
-	 * @param name
-	 * @param value
-	 */
-	public IntegerParameter(String id, String name, Integer value) {
-		setId(id);
-		setName(name);
-		setValue(value);
-	}
-
 	@Override
 	public String getType() {
 		return IntegerParameter.TYPE;
diff --git a/src/main/java/li/strolch/model/parameter/ListParameter.java b/src/main/java/li/strolch/model/parameter/ListParameter.java
index f94da4137..8f3bf50bd 100644
--- a/src/main/java/li/strolch/model/parameter/ListParameter.java
+++ b/src/main/java/li/strolch/model/parameter/ListParameter.java
@@ -37,7 +37,7 @@ public interface ListParameter<E> extends Parameter<List<E>> {
 	 * @param value
 	 *            the value to add
 	 */
-	public abstract void addValue(E value);
+	public void addValue(E value);
 
 	/**
 	 * Removes a single value from the {@link List} of values
@@ -47,5 +47,5 @@ public interface ListParameter<E> extends Parameter<List<E>> {
 	 * 
 	 * @return true if the value was removed, false if it did not exist
 	 */
-	public abstract boolean removeValue(E value);
+	public boolean removeValue(E value);
 }
diff --git a/src/main/java/li/strolch/model/parameter/LongParameter.java b/src/main/java/li/strolch/model/parameter/LongParameter.java
index 1f4d8a0a6..4cf27a145 100644
--- a/src/main/java/li/strolch/model/parameter/LongParameter.java
+++ b/src/main/java/li/strolch/model/parameter/LongParameter.java
@@ -40,13 +40,27 @@ public class LongParameter extends AbstractParameter<Long> {
 	protected Long value;
 
 	/**
-	 * Default constructor
+	 * Empty constructor
 	 */
 	public LongParameter() {
 		//
 	}
 
 	/**
+	 * Default constructor
+	 * 
+	 * @param id
+	 * @param name
+	 * @param value
+	 */
+	public LongParameter(String id, String name, Long value) {
+		super(id, name);
+		setValue(Long.valueOf(value));
+	}
+
+	/**
+	 * DOM Constructor
+	 * 
 	 * @param element
 	 */
 	public LongParameter(Element element) {
@@ -60,17 +74,6 @@ public class LongParameter extends AbstractParameter<Long> {
 		setValue(Long.valueOf(valueS));
 	}
 
-	/**
-	 * @param id
-	 * @param name
-	 * @param value
-	 */
-	public LongParameter(String id, String name, Long value) {
-		setId(id);
-		setName(name);
-		setValue(Long.valueOf(value));
-	}
-
 	@Override
 	public String getValueAsString() {
 		return this.value.toString();
diff --git a/src/main/java/li/strolch/model/parameter/StringListParameter.java b/src/main/java/li/strolch/model/parameter/StringListParameter.java
index 51c9df022..07eccb26e 100644
--- a/src/main/java/li/strolch/model/parameter/StringListParameter.java
+++ b/src/main/java/li/strolch/model/parameter/StringListParameter.java
@@ -22,11 +22,18 @@
 package li.strolch.model.parameter;
 
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 
+import li.strolch.exception.StrolchException;
 import li.strolch.model.StrolchElement;
 
+import org.dom4j.Element;
+
+import ch.eitchnet.utils.helper.StringHelper;
+
 /**
  * @author Robert von Burg <eitch@eitchnet.ch>
  */
@@ -37,6 +44,50 @@ public class StringListParameter extends AbstractParameter<List<String>> impleme
 
 	protected List<String> value;
 
+	/**
+	 * Empty constructor
+	 */
+	public StringListParameter() {
+		//
+	}
+
+	/**
+	 * Default constructor
+	 * 
+	 * @param id
+	 * @param name
+	 * @param value
+	 */
+	public StringListParameter(String id, String name, List<String> value) {
+		super(id, name);
+
+		setValue(value);
+	}
+
+	/**
+	 * DOM Constructor
+	 * 
+	 * @param element
+	 */
+	public StringListParameter(Element element) {
+		super.fromDom(element);
+
+		String valueS = element.attributeValue("Value");
+		if (StringHelper.isEmpty(valueS)) {
+			throw new StrolchException("No value defined for " + this.id);
+		}
+
+		setValue(parse(valueS));
+	}
+
+	private List<String> parse(String value) {
+		if (value.isEmpty())
+			return Collections.emptyList();
+
+		String[] valueArr = value.split(";");
+		return Arrays.asList(valueArr);
+	}
+
 	@Override
 	public String getValueAsString() {
 		if (this.value.isEmpty())
diff --git a/src/main/java/li/strolch/model/parameter/StringParameter.java b/src/main/java/li/strolch/model/parameter/StringParameter.java
index 6aa7ef2dc..ed8fd3a54 100644
--- a/src/main/java/li/strolch/model/parameter/StringParameter.java
+++ b/src/main/java/li/strolch/model/parameter/StringParameter.java
@@ -48,6 +48,20 @@ public class StringParameter extends AbstractParameter<String> {
 	}
 
 	/**
+	 * Default constructor
+	 * 
+	 * @param id
+	 * @param name
+	 * @param value
+	 */
+	public StringParameter(String id, String name, String value) {
+		super(id, name);
+		setValue(value);
+	}
+
+	/**
+	 * DOM Constructor
+	 * 
 	 * @param element
 	 */
 	public StringParameter(Element element) {
@@ -61,17 +75,6 @@ public class StringParameter extends AbstractParameter<String> {
 		setValue(valueS);
 	}
 
-	/**
-	 * @param id
-	 * @param name
-	 * @param value
-	 */
-	public StringParameter(String id, String name, String value) {
-		setId(id);
-		setName(name);
-		setValue(value);
-	}
-
 	@Override
 	public String getType() {
 		return StringParameter.TYPE;