When the key chosen for the let list is composed of several parts, the list presents only the first part of the key initially. By double clicking on one of the values of the key there is the possibility to explore the sub-values of the key and thus through the number of levels of existing sub-keys. When all the key levels are explored, a record can be selected from the table.
An example of this functioning can be seen in the site management object : each site being attached to a company, the initial display is the list of companies and there is then the possibility to expand a company by double clicking it : the list of sites then appears and it is possible to select one of these.
if the box is not checked, it is a simple list.