English: Developers: Make your plugin lock down compatible by checking the "WPLOCKDOWN" constant. The following code will make sure your plugin respects the WPLOCKDOWN setting.
Dutch: Ontwikkelaars: maak je plugin vergrendeld compatibel door de constante "WPLOCKDOWN" te controleren. De volgende code zorgt ervoor dat je plugin de WPLOCKDOWN-instelling respecteert.