If you want to watch right away, Netflix is testing the 4K streaming waters with select shows (House of Cards, Breaking Bad, The Blacklist) and films (Ghostbusters, The Smurfs 2) if you own a Samsung, Sony or LG 4K TV and have a 25Mbps internet connection.
A PRN file is a special type of file which contains instructions for a printer, it tells the printer what to print on the page and where as well as which paper tray to use, what the paper size is and a number of other controls.
How to use it. The Windows and OS X versions work in almost identical ways. You may either drop a PCL, PXL, or PRN file on to the application icon, or launch the application and select a PCL, PXL, or PRN file from a standard file listing. Drop or select only one file at a time.