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   The Relations button, present in the Relations environment,
   displays a complete list of all the relations set for the current project.
   The environment accessed displays a list, in the upper part of the screen,
   containing the general details of each single relation. Using the arrow
   keys, you will be able to position yourself on each single element and
   eventually, by pressing Space Bar, edit the relative definition frame.

   The information displayed is the following:

   State                   Indicates how the relation is created. If it
                           displays a

                            - a green LED, the relation criteria are
                           those created automatically by dBsee, and no
                           rectifications are applied. Rectifications are
                           manual interventions made in the Options
                           environment to the key, filter, or break
                           parameters.

                            - a red LED, the relation has been modified
                           manually.

   Parent                  Brings up the relational parent file.

   Type                    Indicates the relation type set between the files
                           (1:N, 1:1, N:1).

   Child                   Brings up the name of the relational child file.

   Index                   Represents the index number on which a relation
                           has been created.

   Key                     Indicates the search key of the records that
                           satisfy the relation.

   Trigger                 Represents the field that triggers the Lookup
                           mechanism, and allows a search window to be opened
                           on the parent file. It can only be seen on N:1
                           relations.

   Using the Ins, Space Bar and Del keys, you will be able to
   respectively insert a new relation choosing among those displayed in the
   list, enter into edit on the definition frame, or delete the relation on
   which the scroll bar is positioned. For more information on the
   insertion of the different types of relations, consult the relative
   paragraphs within this chapter.

   The frames shown in the lower part of the screen (fig. 2-42) are updated
   automatically when the cursor highlight moves on the different elements of
   the list, and contains information regarding the keys, filter and break of
   the relation, the referential integrity of the data, and the list of
   inherited fields from the parent file.

   The Edit Link button, pressed in correspondence to a relation,
   presents an additional series of buttons that allow, respectively, to
   remove the link between the field and the key of the relational parent
   file, to create a new link between the key fields of the parent file, and
   to insert an expression applied to the single key.

Active keys on the relations

   Space Bar               Activates the edit frame of the selected relation.

   Del                     Deletes the selected relation.

   Ins                     Allows to insert a new relation selecting from the
                           given types.

   Enter                   Activates the Edit Link button on the selected
                           relation.

   Esc / F10               Allows to exit from the environment.

   Ctrl-F1                 Show "How to..."