A special kind of property, usually labeled Parts, activates a list box for selecting parts of the model for display in the Graphics window.

The buttons between the two lists function as follows:
- Transfers the part that has the focus from the Select From list to the Selected list.
- Transfers the part that has the focus from the Selected list to the Select From list.
- Transfers all parts in the Select From list to the Selected list.
- Transfers all parts in the Selected list to the Select From list.
You can let multiple parts have the focus at the same time by holding down the <Ctrl> key while selecting them.
If you want to transfer many parts except for one or two, a helpful technique is using the << or >> button to transfer all of them, then using the > or < button to transfer the desired part(s).
Close the list box simply by clicking on the panel behind it.