I would like to know if there is a way to highlight the sub-assembly my part is in when I select the part in my main assembly. I have figured out how to keep the sub-assembly from expanding (system options>feature manager>deselect "scroll selected item into view"), but the sub-assembly does not highlight in the tree display . Actually, as I type this, I realize nothing is highlighted in the tree display when I select a part, whether its in a sub-assembly or not. Any ideas?