Bug 67513 [R21PRES] view tab tool tip inconsistent with 2.1
In 2.1, the tab item tool tip appeared in the stack's title bar, not on the tab item itself. The r21presentation currently puts the tip on the tab item. I'll attach a patch that fixes the problem.
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/R21BasicStackPresentation.java
paneFolder.flush();
	}
	/**
	 * Initializes a tab for the given part. Sets the text, icon, tool tip, etc.
	 * This will also be called whenever a relevant property changes in the part
	 * to reflect those changes in the tab. Subclasses may override to change
	 * the appearance of tabs for a particular part.
	 * 
	 * @param tabItem
	 *            tab for the part
	 * @param part
	 *            the part being displayed
	 */
	protected void initTab(CTabItem tabItem, IPresentablePart part) {
		tabItem.setText(part.getName());
		
		String toolTipText = part.getTitleToolTip();
		if (!toolTipText.equals(Util.ZERO_LENGTH_STRING)) {
			tabItem.setToolTipText(toolTipText);
		}
		
		
		
		
				
		
		
		 else{
		
		 }