The VividWorks 3D Configurator employs a product tree structure, establishing parent-child relationships where an item as the most left-top most as the parent and items under the item are it's childs. This concept allows to visually describe relationships between items in a tree like structure. Any parent object knows it's childs and any child knows it's parent objects. This allows also configuration to know the association you should think this as "a parent has childs" and "child belongs to a parent" object association.

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VividWorks 3D Configurator Documentation