Two cases I've found in the past: * Styling important content links for print. An anchor tag isn't clickable in print media, potentially leaving important cita

Two cases I've found in the past: * Styling important content links for print. An anchor tag isn't clickable in print media, potentially leaving important citation information out. You can use attr to put it back in. * Sometimes you find yourself debugging device/browser where you don't have a powerful inspector/debugger. Being able to make attribute data visible can help.