To zoom in interactive mode, click 
               		 button on the Diagram pane tool bar, then drag the mouse over the diagram to zoom in on it.
 button on the Diagram pane tool bar, then drag the mouse over the diagram to zoom in on it. 
               	 
            
To zoom in marquee mode, click 
               		 button on the Diagram pane tool bar, then drag the mouse over the diagram to draw a marquee. The Diagrammer displays the
               portion of the diagram inside the marquee.
 button on the Diagram pane tool bar, then drag the mouse over the diagram to draw a marquee. The Diagrammer displays the
               portion of the diagram inside the marquee. 
               	 
            
To fit the diagram in the Diagram pane, click the 
               		 button on the Diagram pane tool bar.
 button on the Diagram pane tool bar.