Except the circle rule doesn't really help unless you know when to skip stuff because you're not done on the other side. The right-left rule instead is precise

Except the circle rule doesn't really help unless you know when to skip stuff because you're not done on the other side. The right-left rule instead is precise and correct. See https://news.ycombinator.com/item?id=5080081 https://news.ycombinator.com/item?id=5080081 and https://web.archive.org/web/20190714064656/http://cseweb.ucsd.edu/~ricko/rt_lt.rule.html https://web.archive.org/web/20190714064656/http://cseweb.ucs...