The push buttons on the control panel allow you to control the speed
  your application executes and the Memory Map displays.  Use the push
  buttons on the control panel to do the following:

  Button             Function
  --------           ---------

  Start/Step          Initially, the Start push button starts your
                      application.  Once your application is running,
                      this push button becomes the Step push button, which
                      you can use when your application is paused to
                      single-step through the Memory Map display.

  Pause               Stops the updating of the Memory Map.

  Slow                Slows the updating of the Memory Map.

  Sync                Off: A small histogram shows how far behind
                      your application's processing the Memory Map
                      displays events (a slight discrepancy improves
                      heap analyzer performance).

                      On: Directs the heap analyzer to update the Memory
                      Map at exactly the same time your application
                      executes the event.

  For information on other heap analyzer screen locations and pop-up
  menus, click the 'On Context' menu item in the heap analyzer Help menu,
  then click the location of interest.

  For information on using the heap analyzer, see the 'On Window' menu
  item in the heap analyzer Help menu.