Background
a google poem

Features seamlessly tiling background textures for use
specifying a background is a good idea ...

contemporary, classical, hymns and seasonal music

the digital junk yard
Dating Services and Background Checks for Single Adults.
volunteers may be asked to submit to background checks. ...

The Cosmic Background Imager (CBI) is a special-purpose
radio telescope to study the cosmic microwave background
radiation from the early universe. ...

... Sharpen your pencils, this is the mathematical background
(such as it is).

... There's a lot of background on what's been tried
Basic explanations of key concepts, including the Big Bang,
expansion of the universe, and the ripples in the density
of the early universe that led to