About the Design Objects Tree
The Design Objects Tree appears under the Model Tree when you click Flexible Modeling in an open sheet metal part. The tree displays sheet metal design objects in collapsible nodes. For example, all recognized corner reliefs are listed under the Corner Reliefs node. When you expand a node and select an item, it highlights in the graphics window. When you are in a tool, the selected item is added to the active tool collector. You can select the design objects to show in the tree.