<tip type="quick validation when proofing" author="David Siedband"> When I'm working on a site, I often add links like these to my footer include so that I can quickly validate my rendered pages as I make updates to the templates. <a href="http://validator.w3.org/check/referer" target="_blank">validate markup</a> <a href="http://jigsaw.w3.org/css-validator/check/referer" target="_blank">validate css</a> </tip>