yui/yui3 — comment on commit e1d2c90eed2334936210d1e1c6c53a43934ed517
File: src/button/css/cssbutton.css line 7
By rgrove:

Strange, I've never heard of it before. It's a bit hard to search for, too. What are the benefits of this `*+` attribute hack over `*`? Can you point me at any references that talk about it?