Bug 32680 Print margin is in wrong location
Eclipse 2.1 (RC1) After changing my font to "Courier New", then turning on the Print Margin, I had to realize that it was located in the wrong place (off by some characters)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
public InformationDispatchAction(ResourceBundle resourceBundle, String prefix, final TextOperationAction textOperationAction) {
			super(resourceBundle, prefix, JavaEditor.this);
			if (textOperationAction == null)
				throw new IllegalArgumentException();
			fTextOperationAction= textOperationAction;
		}
		
		/*
		 * @see org.eclipse.jface.action.IAction#run()
		 */
		public void run() {
			ISourceViewer sourceViewer= getSourceViewer();
			if (sourceViewer == null) {	
				fTextOperationAction.run();
				return;
			}
				
			if (! (sourceViewer instanceof ITextViewerExtension2)) {
				fTextOperationAction.run();
				return;
			}
				
			ITextViewerExtension2 textViewerExtension2= (ITextViewerExtension2) sourceViewer;
			
			ITextHover textHover= textViewerExtension2.getCurrentTextHover();
			if (textHover == null) {
				fTextOperationAction.run();
				return;				
			}
			Point hoverEventLocation= textViewerExtension2.getHoverEventLocation();