[WindowsCentral.com]

Continuum is a feature on the Lumia 950 and 950 XL that you might think is useless, but you'll probably change your mind after actually using it. Continuum lets you connect your Lumia 950 or 950 XL with a monitor, mouse and keyboard. You can then have a desktop-like app experience using the apps on your phone.
The big screen-optimized environment can make you more productive or simply let you enjoy videos and the web on a much bigger display. You can also keep using your phone at the same time. You can answer phone calls and send text messages without interrupting what's on the big screen.

We'll recommend some accessories to get you started with Continuum.

Full story from the WindowsCentral blog...