A row of a list field or a table field can be set to a selected or unselected state by a 4GL statement by setting an appropriate attribute. Setting the selection state of a row yields different results, based on the styles of selection currently in effect. In single selection, setting a row to the select state deselects the previously selected row. Additionally, for a list field, the value of the list field's variable is updated to represent the current selection. For a table field, the attributes CurRow and ActiveRow are updated.

For more information, see the Programming Guide.