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 UNLOAD {form | ctlname[index%]}
 
 Usage Notes
   ■ Unloading a form or control frees memory and resets properties to their
     original value.
 
   ■ When a form is unloaded, all controls placed on the form at run time
     are no longer accessible. Controls placed on the form at design time
     remain intact, although any run-time changes to those controls and
     their properties are lost when the form is reloaded. All changes to
     form properties are also lost.
 
   ■ Control array elements added to a form at run time can only be removed
     with the UNLOAD statement. The properties of unloaded controls are
     reinitialized when the controls are reloaded.
 
   ■ When a modal form is unloaded, program execution returns to the point
     in code where the SHOW method was used to display the modal form.
     See: ◄Modal Vs. Modeless►  ◄SHOW Method►
 
   ■ Referencing a control on a form that has been unloaded causes the form
     to be reloaded.