Top Layout has an advanced transport management. To manage the various families, you need to fill in the DESCRIPTORS_DICT tab by setting the data for the various families. This tab defines the common behavior for all components of a transport family regardless of size.

Each family is completely defined by its definition row. The following information (columns) is required for each row:

Other columns define the attributes that can be assigned to the family.

Each family will then have a card (defined by the name set in TAB_DESC) that defines the behavior of the individual elements of the family. This card is normally quite large and allows you to define the anagraphic behavior of each component with extreme precision.