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   Data displayed inside the List-box can be modified (edited) in two
   different ways:

     . Inside the List-box

     . Outside, on an external Form object

Inside the List-box

   If the columns are utilised for displaying the data stored in fields of
   the associated file, the edit can be performed directly on the list-box
   cells. This function is obtained by setting the Edit allowed property
   (use Ctrl-Enter) to Yes.
    In the generated application, the Space Bar is used to enter into
   edit of the cell.

   --------------------------------------------------------------------------
   Attention must be payed when allowing edit directly on the list-box cells,
   because no input validation are performed on the data entered. This can
   cause inconsistency in the primary keys and in the fields with lookups
   associated.
   --------------------------------------------------------------------------

Outside, on an external Form object

   To modify data from the outside of a list-box, it is necessary to define a
   new object that will be associated to the same list-box, and allowing to
   edit the information displayed. The EditBrowse form property (use
   Ctrl-Enter with the cursor on the list-box outline) will contain the
   name of the object. An object associated to a list-box is identified as a
   Edit Browse. The Edit Browse is activated by pressing Enter
   highlighting the list-box.

   The Edit Browse is designed in the same way as the Form object. In fact,
   an Edit Browse is similar, in both properties and functionality, to a
   Form. The difference lies in the fact, that the Edit Browse is not an
   independent object, i.e. is must be associated to a list-box. It is
   also classified differently in the repository.

   In the generated application, the Edit Browse is not displayed until it is
   activated. Pressing the Ins on the list-box will activate the Edit
   Browse automatically in insertion mode, thus adding the entered data to
   the list-box's rows. Pressing the Space Bar activates the same object
   in modification mode, presenting the data of the currently highlighted row
   for edit. The Edit Browse object also processes a special key, F9,
   that allows the operator to save newly entered data and to continue with
   another insertion rightaway.

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