public MigLayout()
	{
		this("", "", "");
	}

	/** Constructor.
	 * @param layoutConstraints The constraints that concern the whole layout. <code>null</code> will be treated as "".
	 */
	public MigLayout(String layoutConstraints)
	{
		this(layoutConstraints, "", "");
	}

	/** Constructor.
	 * @param layoutConstraints The constraints that concern the whole layout. <code>null</code> will be treated as "".
	 * @param colConstraints The constraints for the columns in the grid. <code>null</code> will be treated as "".
	 */
	public MigLayout(String layoutConstraints, String colConstraints)
	{
		this(layoutConstraints, colConstraints, "");
	}

	/** Constructor.
	 * @param layoutConstraints The constraints that concern the whole layout. <code>null</code> will be treated as "".
	 * @param colConstraints The constraints for the columns in the grid. <code>null</code> will be treated as "".
	 * @param rowConstraints The constraints for the rows in the grid. <code>null</code> will be treated as "".
	 */
	public MigLayout(String layoutConstraints, String colConstraints, String rowConstraints)
	{
		setLayoutConstraints(layoutConstraints);
		setColumnConstraints(colConstraints);
		setRowConstraints(rowConstraints);
	}

	/** Constructor.
	 * @param layoutConstraints The constraints that concern the whole layout. <code>null</code> will be treated as an empty cosntraint.
	 */
	public MigLayout(LC layoutConstraints)
	{
		this(layoutConstraints, null, null);
	}

	/** Constructor.
	 * @param layoutConstraints The constraints that concern the whole layout. <code>null</code> will be treated as an empty cosntraint.
	 * @param colConstraints The constraints for the columns in the grid. <code>null</code> will be treated as an empty constraint.
	 */
	public MigLayout(LC layoutConstraints, AC colConstraints)
	{
		this(layoutConstraints, colConstraints, null);
	}

	/** Constructor.
	 * @param layoutConstraints The constraints that concern the whole layout. <code>null</code> will be treated as an empty cosntraint.
	 * @param colConstraints The constraints for the columns in the grid. <code>null</code> will be treated as an empty constraint.
	 * @param rowConstraints The constraints for the rows in the grid. <code>null</code> will be treated as an empty constraint.
	 */
	public MigLayout(LC layoutConstraints, AC colConstraints, AC rowConstraints)
	{
		setLayoutConstraints(layoutConstraints);
		setColumnConstraints(colConstraints);
		setRowConstraints(rowConstraints);
	}

	/** Returns layout constraints eighter as a <code>String</code> or {@link net.miginfocom.layout.LC} depending what was sent in
	 * to the constructor or set with {@link #setLayoutConstraints(Object)}.
	 * @return The layout constraints eighter as a <code>String</code> or {@link net.miginfocom.layout.LC} depending what was sent in
	 * to the constructor or set with {@link #setLayoutConstraints(Object)}. Never <code>null</code>.
	 */
	public Object getLayoutConstraints()
	{
		return layoutConstraints;
	}

	/** Sets the layout constraints for the layout manager instance as a String.
	 * <p>
	 * See the class JavaDocs for information on how this string is formatted.
	 * @param s The layout constraints as a String representation. <code>null</code> is converted to <code>""</code> for storage.
	 * @throws RuntimeException if the constaint was not valid.
	 */
	public void setLayoutConstraints(Object s)