The pick filter restricts the types of objects you can pick. To change the pick filter, on the Structure view toolbar click the . Alternatively, the pick filter can be controlled from the Structure view context menu.button
Note that some commands have built-in pick filters that override your chosen filter to make it easier to select the proper objects for that command.
The available pick filters for solids are:, , , and . The available pick filters for sketches are: , , and .