In the middle of typing a post, my brain left to consider another matter. When it re-embodied, there was a notice on the screen that said "Holding the shift key for 8 seconds would shutoff the "Filters". What are these Filters? I chose no- don't shut off the filters then decided to get the notice back and held the shift for the 8 seconds. No notice this time, but I'm sure it shut down the filters. What are these filters? DRB