What select tool mode allows you to select a face and deselect it upon being picked again?

The Add/Remove tool mode is designed to allow users to select a face and then deselect it upon picking it again. This functionality is particularly useful in modeling software like Solid Edge, as it enables users to efficiently manage their selections without needing to switch between different selection modes.

When using this mode, if an object (in this case, a face) is selected, clicking on it again will remove it from the selection. This toggling capability is invaluable when working with complex geometries where you might want to refine your selections dynamically. It supports a more intuitive workflow, making it easier to modify selections on-the-fly.

In contrast, the other selection modes typically do not offer this toggle functionality. For example, the Normal Select mode allows for single selections but does not enable deselecting an item with a second click. Multi-Select usually facilitates selecting multiple elements simultaneously but lacks the toggle feature inherent to the Add/Remove mode. Therefore, the ability to deselect upon picking again distinctly characterizes the Add/Remove selection mode.