what makes this elegant is that derivatives naturally extend to intersection and complement:
restart: *restart-policy，这一点在PDF资料中也有详细论述
Download the app to your device of choice (the best VPNs have apps for Windows, Mac, iOS, Android, Linux, and more)。关于这个话题，PDF资料提供了深入分析
The two multi-cycle pipes on the right can take three inputs each from predicate registers (two inputs, and a predicate as a mask), so treat the purple input arrow as three. Drawing more arrows is hard.，推荐阅读电影获取更多信息
Blue: Gamechangers