Invert Selections
The Invert Selection button is used to invert the selected state of the model. When clicked, all selected items
are made unselected and all previously unselected items are made selected. For example, this
can be very useful when many items are to be selected in a large
model. Simply click on the undesired items to select them, then click the
Invert Selection button to make
them unselected and everything else selected.