Hide or display the sleep, restart, and shutdown buttons, in the login window. Hide or display the sleep, restart, and shutdown buttons, as a group, in the login window. [Hide/Display] In loginwindow.plist, set the PowerOffDisabled key = true to hide the buttons. If the key does not exist, buttons are displayed. oval:org.secpod.oval:def:24978 SCAP Repo OVAL Definition 2015-06-12