To display a call flow diagram in the Program Control Flow pane, select the seed item in the Source or Context panes. The
               diagram is automatically redrawn when you select a new seed item in the Source or Context pane, unless the new seed already
               appears in the current diagram. To redraw the diagram in that case, select the new seed item in the diagram and click the
               
               		 button on the toolbar at the bottom of the pane.
 button on the toolbar at the bottom of the pane.