diff --git a/visualization/ParameterArea.class b/visualization/ParameterArea.class
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diff --git a/visualization/ParameterArea.java b/visualization/ParameterArea.java
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+/**
+ * 
+ */
+package visualization;
+
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+
+/**
+ * This class provides the basic parameter input area for an algorithm visualization. 
+ * Add the components and corresponding methods you need and use them in your algorithm.
+ * @see logging.Algorithm
+ * @see visualization.HybridWindow
+ * @see javax.swing.JPanel
+ * @author Björn Strobel<br><small>
+ * University of Cooperative Education Stuttgart, 
+ * Campus Horb<br>
+ * Department of Information Technology<br>
+ * it2003<br></small>
+ */
+public abstract class ParameterArea extends JPanel{
+	
+	/** The parameter area's scroll pane. */
+	protected JScrollPane scrollPane;
+	
+	/**
+	 * Standard constructor.
+	 * Creates an empty parameter area with scroll pane.
+	 */
+	public ParameterArea() {
+		scrollPane=new JScrollPane(this);
+	}
+	
+	/**
+	 * Returns the parameter area's scroll pane.
+	 * @return the parameter area's scroll pane
+	 */
+	public JScrollPane getScrollPane(){
+		return scrollPane;
+	}	
+}
diff --git a/visualization/TextArea.class b/visualization/TextArea.class
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diff --git a/visualization/TextArea.java b/visualization/TextArea.java
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+/**
+ *
+ */
+package visualization;
+
+import java.awt.Color;
+import java.awt.Font;
+
+import javax.swing.JScrollPane;
+import javax.swing.JTextArea;
+
+import logging.LogElement;
+import logging.LogElementList;
+
+/**
+ * This class provides the basic text output area for a HybridWindow.
+ * Use it in assoziation with packages logging and visualization.
+ * Just overwrite the print method to get a textual output of a log list element.
+ * Parameters for algorithm processing are read from member parameterArea that ist part of the user interface.
+ * @see logging.Algorithm
+ * @see LogElement
+ * @see LogElementList
+ * @see visualization.DrawArea
+ * @see visualization.HybridWindow
+ * @see visualization.ParameterArea
+ * @see visualization.TextArea
+ * @see javax.swing.JTextArea
+ * @author Björn Strobel<br><small>
+ * University of Cooperative Education Stuttgart,
+ * Campus Horb<br>
+ * Department of Information Technology<br>
+ * it2003<br></small>
+ */
+public abstract class TextArea<LOG extends LogElement>extends JTextArea{
+
+	/** The text area's scroll pane. */
+	protected JScrollPane scrollPane;
+	/** The log element list where the text area gets the log elements. */
+	protected LogElementList<LOG>logList;
+
+	/**
+	 * Standard constructor.
+	 * Creates an empty text area with scroll pane.
+	 */
+	public TextArea() {
+		super();
+
+		scrollPane=new JScrollPane(this);
+
+		setBackground(Color.black);
+		setForeground(Color.green);
+		setEditable(false);
+		setColumns(25);
+		setRows(5);
+		setFont(new Font("Monospaced",Font.PLAIN,12));
+	}
+
+	/**
+	 * Creates an empty text area with scroll pane and sets the specified log list.
+	 * @param logList the text area's log list
+	 */
+	public TextArea(LogElementList<LOG>logList){
+		super();
+
+		scrollPane=new JScrollPane(this);
+
+		setBackground(Color.black);
+		setForeground(Color.green);
+		setEditable(false);
+		setColumns(25);
+		setRows(5);
+		setFont(new Font("Monospaced",Font.PLAIN,12));
+
+		this.logList=logList;
+	}
+
+	/**
+	 * Returns the text area's scroll pane.
+	 * @return the text area's scroll pane
+	 */
+	public JScrollPane getScrollPane(){
+		return scrollPane;
+	}
+
+	/**
+	 * Sets the text area's logList.
+	 * @param logList the text area's logList
+	 */
+	public void setLogList(LogElementList<LOG>logList){
+		this.logList=logList;
+	}
+
+	/**
+	 * Provided for convenience. Calls print();
+	 */
+	public void printStep(){
+		print();
+	}
+
+	/**
+	 * Prints the actual algorithm step's description.
+	 * It is suggested to overwrite this method.
+	 */
+	//public void print(){
+	public boolean print(){
+				LogElement logElement=(LogElement)logList.get();
+		if(getText().equals("")){
+			//setText(logElement.getDescription());
+			append(logElement.getDescription());
+		}
+		else{
+			setText(getText()+"\n"+logElement.getDescription());
+			append("\n"+logElement.getDescription());
+		}
+		return true;
+	}
+
+	/**
+	 * Clears the text area
+	 */
+	public void clear(){
+		setText("");
+	}
+}
diff --git a/visualization/package.html b/visualization/package.html
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+<body>Provides the classes necessary to create a visualization of a logged algorithm.</body>
\ No newline at end of file