To close Lotus Notes, select either File | Exit or click the red X in the top right-hand side. Be aware that one needn't close all the open window tabs before shutting down. For example, if we have our mail and calendar tabs open, we can leave these open; so, when we start Lotus Notes again, our e-mail and calendar tabs will be open ready for us. This option is controlled via a preference that is set by default; it can be turned off if one wishes. To turn off this preference, go to File | Preferences | Windows and Themes and uncheck the On restart, reopen any tabs that were open when I closed the client option.