16.04 beep options for Slow Keys in the Universal Access of System Settings

[Ralf Mardorf]

You also could open a Mozilla based browser, at least IceCat,
Firefox or Pale Moon, JFTR not QupZilla.

Press Ctrl+F and search something hat doesn't exist on the opened site.
A soon as the colour turns to red while typing, you also should hear the
bell/a beep.