Use the Zoom menu on the heap analyzer window to specify a closer or
  more distant view of the Memory Map by choosing from the following
  options:

             Extraordinarily Close
             Extremely Close
             Very Close
             Close
             Medium  (Default)
             Far
             Very Far

  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.