Additional tables to the principal table managed by the object. These tables are opened then automatically closed on the execution of the object, under the abbreviation indicated otherwise under the dictionary abbreviation. The fields in these tables are accessible in the object.
In addition, the fields in these tables are used to define a left list column and the selection screens from the moment when the link expression is entered. It is possible to define the hierarchy links, on the condition that these tables are entered in the grid in the hierarchy order.
The link key must be unique. If it is not entered, the supervisor takes the primary key.