css constants

Please forgive me if this has been discussed extensively before, but a lot
of people (see below) have talked about it at various points and I haven't
seen it in any draft; why not have an @variable or @constant that would set
a constant that could be used as a value?

http://simonwillison.net/2003/Jul/22/featureRequest/
http://cafe.elharo.com/web/css-repeats-itself/
http://icant.co.uk/articles/cssconstants/
http://www.devarticles.com/c/a/Web-Style-Sheets/CSS-Constants/
http://www.frontpagewebmaster.com/m-299147/tm.htm#299147
http://www.kryogenix.org/days/2003/07/23/variables

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Daniel Brumbaugh Keeney
Devi Web Development
Devi.WebMaster@gMail.com