Show a Mac Screen or Window Somewhere Else — Without a Cable

There are many moments where you do not need another monitor — you just need to see what is already on your Mac somewhere else. There are many moments where you do not need another monitor — you just need to see what is already on your Mac somewhere else. https://medium.com/@chris.ahrweiler/show-a-mac-screen-or-window-somewhere-else-without-a-cable-55c036b9a5ca