We’ve all been there. You show up at a beach, and there’s a colored flag, sometimes more than one, fluttering in the wind. The lifeguards put it there for a reason, but what does it mean?

Here is our guide to the referee assistant signals. When the whole of the ball crosses the line, it's time for a throw-in. The assistant referee will hold up the flag in the direction that the team ...

The homemade flag carried by Lanphier High School students ... into the “Environmental Action Center,” as a sign on the door announced. Now it was a place where the 24-year-old biology teacher ...