"Once upon a time, people lived in caves and hunted animals with
spears. Then, they recorded things from the TV onto small black
cartridges filled with magnetic tape. Finally, in 1999, the Digital
Video Recorder was born and civilization was discovered. I may have
missed out some minor details, but that's the short version.
:The Digital Video Recorder (DVR or PVR) enabled people to
program recordings and play them back using an on-screen program
guide, rather than messing with manually setting start and end