A previous laptop had PAGE UP and PAGE DOWN keys arranged side by side in a horizontal layout on the right side of the keyboard. I was accustomed to scrolling through my PowerPoint presentations by using those keys. Unfortunately, the keyboard on my docking station had the same two keys in a _vertical_ layout with PAGE DOWN and DELETE side by side. I deleted quite a few slides before I realized what was going on. I solved the problem by adding a control to “Disable/Enable Delete Key” to my caps lock controller utility.