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   Manages the values of the fields that, coming from a child file, assign a
   pre-calculated value to the parent file.  Pre-calculating a field in the
   parent file is useful when you want to assign a default value coming from
   a lookup file.  For example, it is possible to assign the field SelPrc
   found in the invoice rows the value of the field ArtPrc for the
   corresponding article.  The values of the pre-calculated fields can be
   easily modified.  By pressing the button Pre Evaluation the list of
   pre-calculated fields is shown.

Active keys

   Space Bar               Edits the properties frame for the pre-calculated
                           field. This frame also allows the possibility to
                           insert information into the slot (see slot) or to
                           modify the expression that assigns a value to the
                           field.

   Ins                     Allows a new field to evaluate to be added to the
                           list.

   Del                     Allows the deletion of a field from the list.