Bug 132031 access to chart scripting methods and related documentation
It's very strange that access to chart scipting methods available only from script tab related to whole chart item. This approach is not consistent comparing to how script defined for such report items as table or dataset. That why inside of chart's script tab we see comment out bunch of chart scripting methods. I suggest that every component on chart item that have corresponding scripting methods must have separate script tab with set predefined methods. Beside that it would be nice to have at least some documentation and axamples on this topic.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/script/ScriptHandler.java
* @deprecated This is kept for backward compatibility only.
	 */
	public static final String AFTER_COMPUTATIONS = "afterComputations"; 
	/**
	 * @deprecated This is kept for backward compatibility only.
	 */
	public static final String START_RENDERING = "startRendering"; 	
	/**
	 * @deprecated This is kept for backward compatibility only.
	 */
	public static final String FINISH_RENDERING = "finishRendering"; 
	/**
	 * @deprecated This is kept for backward compatibility only.
	 */
	public static final String START_COMPUTE_SERIES = "startComputeSeries"; 
	/**
	 * @deprecated This is kept for backward compatibility only.
	 */
	public static final String FINISH_COMPUTE_SERIES = "finishComputeSeries"; 
	/**
	 * @deprecated This is kept for backward compatibility only.
	 */
	public static final String BEFORE_DRAW_ELEMENT = "beforeDrawElement"; 
	/**
	 * @deprecated This is kept for backward compatibility only.
	 */
	public static final String AFTER_DRAW_ELEMENT = "afterDrawElement"; 
	
	
	public static final String BEFORE_DATA_SET_FILLED = "beforeDataSetFilled";