macOS High Sierra: How to use Reader mode in Safari 11

Safari’s Reader mode is a way for users to peruse a webpage without distractions from ads, videos, sponsored content links, and other web elements you may not consider essential to the article you are reading.In Safari 10 (the version that comes with macOS Sierra), Reader mode has to be enabled manually (View > Show Reader or press Shift-Command-R). With Safari 11 in macOS High Sierra and Sierra, you can set the browser to open most pages in Reader mode. (Some pages, like the homepage o