to print the part structure (the Print Preview 
is only available for lists).The informational Structure form shows the product structure of a part. The Explorer tree allows you to expand and view the different components of the part structure.
If a part is composed of semi-finished products, the structure of these semi-finished products is shown as well. The Explorer menu is therefore a useful tool to help you see how parts are made up of semi-finished products.
Tip: Use to print the part structure (the Print Preview is only available for lists).