Temporary override keys are used to temporarily turn on or off drafting settings.
For example, holding down the Shift key toggles the current setting of Ortho mode. If Ortho mode is off before the Shift key is held down, Ortho mode will be turned on and turned back off when the key is released.
The following table shows the properties of the Object Snap Override : Endpoint temporary override key as they appear in the Properties pane.