On-screen Trackpad

Similar to the implementation for the application, "Screens". You enable "trackpad mode", and the entire screen works as a touchpad. For instance, using only the bottom right edge of the screen you could move and manipulate the 'cursor' all of the way across the screen like you would on any other trackpad, and tapping on the screen would then register a "click". This prevents people from having to work to tap in the exact right spot on a line