When you monitor a variable or expression, the debugger displays the
  value in the monitor view and checks and updates the displayed value
  whenever the debugger regains control from your program (for example,
  after a step or at a breakpoint).

  To monitor a variable or expression:

  1.  Choose the Views...  menu item in the Options menu on the main
      window.  The Views dialog box appears.

  2.  Click on monitor view within the dialog box.  The monitor view
      appears in the optional view window.

  3.  Find and select the variable name or expression in a window.

  4.  Click on the Monitor push button on the push-button view of the
      main window.  The debugger:

       -  Puts the selected variable name or expression, along with its
          qualifying path name, in the Monitor Expression column

       -  Puts the current value of the variable in the Value/Deposit
          column

       -  Puts a cleared button in the Watched column