Provides options to toggle confirmation dialog boxes on and off. All confirmation options apply to the options on the Layer menu.
Delete markup layer - Indicates whether a confirmation dialog box will appear when you delete a markup layer. A check by this item specifies that a warning dialog box will appear.
Discard markup layer - Toggle off and on a confirmation dialog box that appears when you discard a markup layer. With the Discard markup layer option selected, if you click Discard on the Save Layer dialog box, the software displays a prompt message prior to discarding the layer.
Unload markup layer - Indicates whether a confirmation dialog box will appear when you unload a markup layer. A check by this item specifies that a warning dialog box will appear.