That is, it's an abstraction of the graphics hardware.
"Debian GNU/Linux: Guide to Installation and Usage"
John Goerzen and Ossama Othman
User applications that ask the X server to show windows or graphics on the screen are called X clients.
"Debian GNU/Linux: Guide to Installation and Usage"
John Goerzen and Ossama Othman
The authors of this report wish to acknowledge with thanks the assistance of Lindsey Carne, Mrs. J. H. Elliott, Lee Hubbard, Mrs. Jean Johnson Rust, and Mrs. Barry Sullivan, who provided information and graphics for this publication.
"The Fairfax County Courthouse"
Ross D. Netherton Ruby Waldeck