You can apply transparency to portions of the model, allowing
visibility into the interior.
Select the object (or a part of the object) in the
work area.
If you click the hint at the top of the
work area,
additional tooltips display.
From the
context toolbar,
select
Switch All
to switch the component's transparency or select
Keep Only
to keep the selection's transparency and switch the
transparency of all other components.
Click away from the model to deselect the part and show the true
transparency.
Select
Restore
to remove transparency from the selected object.