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Confirmation dialog
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<p>Confirmation dialog (sometimes called a warning <a href="/facts/Alert_dialog_box/QFuJQ1E9">alert box</a> or chicken box) is a <a href="/facts/Dialog_box/VgWHgrE2">dialog box</a> that asks user to approve requested operation. Usually this dialog appears before a potentially dangerous operation is performed (program termination, file deletion, etc.) </p><p>Typically confirmation dialog boxes have two <a href="/facts/Button_(computing)/TAJ36ebs">buttons</a> (e.g. <i>Yes</i> / <i>No</i>, <i>Confirm</i> / <i>Cancel</i>) or three buttons (e. g. <i>Save</i> / <i>Discard</i> / <i>Cancel</i>). </p><p>Some <a href="/facts/Human_interface_guidelines/U9WBXEQo">human interface guidelines</a> recommend avoiding unnecessary confirmation dialogs. <a href="/facts/BlackBerry/k9LGPyg5">BlackBerry</a> and Sun <a href="/facts/Java_(software_platform)/fpn6x8WL">Java</a> 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. </p>