I was wondering if there is a way to make my display show a permanent mark directly at the middle of my screen. I would need it to stay there while programs are running. I have already tried a dry erase marker however when I am working with dark colors I cannot see it. I am hoping there is a way I can run another program or whatever to place a bright dot at the middle of my screen that won't go away when I open various other programs.
Light bulbs you shouldn't buy
There are plenty of dimmable LED light bulbs, but make sure you don't buy the ones that flicker when you dial them down.