The Message Window, located beneath the Memory Map, displays output
  from the heap analyzer.

  Use the Message Window on the heap analyzer window to do the following:

   -  Read informational and error messages generated by the heap
      analyzer.

   -  Read one-line informational descriptions on individual segments.
      (Click on MB1 while your mouse pointer rests on the segments of
      interest.)

  For information on Message Window context-sensitive pop-up menus, see
  the additional topics below.

  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.