The package has a reference designator in the PCB Layout view. For example,
U1. In the Schematic view, each function symbol can have the same reference designator, or each symbol can have a unique reference designator that is derived from the primary reference designator. For example,
U1–A,
U1–B, and so on. The representation of the fractured component in the
![](../creo_view/images/ecadtree_image.png)
Substructure pane depends on the reference designators: