Confirmation dialog box
Confirmation dialog (sometimes called warning alert boxes)[1] is a dialog box that asks user to approve requested operation. Usually this dialog appears before a potentially dangerous operation is performed (program termination, file deletion, etc.)
Typically confirmation dialog boxes have two buttons (e.g. Yes / No, Confirm / Cancel) or three buttons (e. g. Save / Discard / Cancel).
Some human interface guidelines recommend avoiding unnecessary confirmation dialogs.[2] BlackBerry and Sun Java UI guidelines recommended a confirmation button be put before a cancellation button; but a default button should not be associated with a major destructive action.[1][3]
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