> What are quines?
>
>  Thanks!

They are self-reproducing computer programs; i.e., those whose output is
the same as the source code.

This usage of the term "quine" seems to have been coined by Douglas
Hofstadter (I first saw Hofsteader use that term in his book "G?del,
Escher, and Bach", although he may have coined it previously), in honor
of the logician Willard Van Orman Quine, who extensively studied and
wrote about the concept of self-reference.

For more information about W. V. Quine, check out his (apparently)
offical home page:

   http://www.wvquine.org

It's maintained by a family member of his.

-- 
 Lloyd Zusman
 ljz / asfast.com