Use this option to remove the user settings selected with the Program Options. Selecting this option opens the Windows registry editor in the folder where your settings are saved, usually this folder is HKEY_CURRENT_USER\Software\SDR-RADIO.com (V3)\SDRSpectrum\Ident0 . You can safely delete the contents of this folder by selecting Del from the Edit menu.
The folder HKEY_CURRENT_USER\Software\SDR-RADIO.com (V3)\SDRSpectrum\Ident0_001 contains layout information, this folder can also be deleted with the registry editor.