[techs] Additional resource for text equivalents section

Tom,
Another reference for the text equivalents section of the Techniques 
Gateway [1]:
Excerpts from the NBA Tape Recording Manual, Third Edition
<http://www.w3.org/2000/08/nba-manual/Overview.html>
--wendy

[1] <http://www.w3.org/WAI/GL/WCAG20/WD-WCAG20-TECHS-GATEWAY-20031205.html>

-- 
wendy a chisholm
world wide web consortium
web accessibility initiative
http://www.w3.org/WAI/
/--