Use the Monitor menu on the optional view window as follows:

  Action             Function
  ------             --------

  Expand             Expands a selected nonscalar variable.

  Collapse           Collapses a selected nonscalar variable.

  Deposit...         Changes the value of variable.

  Toggle
     Watchpoint      Activates or deactivates a watchpoint.

  Typecast ->        Typecasts a selected variable.

  Change Radix ->    Changes the radix for a selected variable.

  Change All
     Radix ->        Changes the default radix for all subsequent
                     monitor entries.

  Remove             Removes the monitor entry from display.