BUG. I a few moments ago reported that I could not program the "Pause" key to my MXKeys. I use the OSK (Windows On Screen Keyboard) to program it. After programming a key to "Pause" (is shown as "Break" in Options+) the action shows as "Scroll Lock" on the OSK. So to summarize...programming "Break" to a key results with the key being programmed to "Scroll Lock".