Cans are smart occurrence objects placed on tubular members based by the Place Can command in the Structure task.
Visual Basic Project: [Programming Resources Folder]\Programming\ExampleCode\ShipStructure\Rules\CanRules\CanRules.vbp
Compiled Rule: [Reference Data Folder]\SharedContent\Bin\ShipStructure\Rules\Release\SM3DCanRules.dll
Bulkload: Can Workbook
The selector class modules End.cls, InLine.cls, and StubEnd.cls are included in the Visual Basic project: