Bug 31249 Bad default modifier for Hyperlink style navigation on MacOS X
M5 The default modifier for hyperlink style navigation is "Control" which doesn't work well on MacOS X because here the Control modifier is used to simulate a right-click (opening the context menu). The consequence of this is that if control is pressed the users gets the underlined text style when hovering, but he cannot follow the link because a click results in opening the context menu. The default on MacOS should be 'Command'
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/PreferenceConstants.java
* OPEN_TYPE_HIERARCHY_IN_VIEW_PART</code>.
	 * </p>
	 * 
	 * @see #OPEN_TYPE_HIERARCHY_IN_PERSPECTIVE
	 * @see #OPEN_TYPE_HIERARCHY_IN_VIEW_PART
	 */
	public static final String OPEN_TYPE_HIERARCHY= "org.eclipse.jdt.ui.openTypeHierarchy"; 
	/**
	 * A string value used by the named preference <code>OPEN_TYPE_HIERARCHY</code>.
	 * 
	 * @see #OPEN_TYPE_HIERARCHY
	 */
	public static final String OPEN_TYPE_HIERARCHY_IN_PERSPECTIVE= "perspective"; 
	/**
	 * A string value used by the named preference <code>OPEN_TYPE_HIERARCHY</code>.
	 * 
	 * @see #OPEN_TYPE_HIERARCHY
	 */
	public static final String OPEN_TYPE_HIERARCHY_IN_VIEW_PART= "viewPart"; 
	
	/**
	 * A named preference that controls the behaviour when double clicking on a container in the packages view. 
	 * <p>
	 * Value is of type <code>String</code>: possible values are <code>
	 * DOUBLE_CLICK_GOES_INTO</code> or <code>
	 * DOUBLE_CLICK_EXPANDS</code>.
	 * </p>
	 * 
	 * @see #DOUBLE_CLICK_EXPANDS
	 * @see #DOUBLE_CLICK_GOES_INTO