 and the types of links that we show on search pages to make sure that we're providing high quality content. And they give us ratings that then inform our engineers and our algorithms for what happens every day. And unfortunately, when we were looking at how we were addressing fake news, we acknowledged that those guidelines didn't do a good enough job of assessing inaccurate or offensive results. So we updated those guidelines to clarify that high quality results should be accurate and highly credible.