Reporting question for Capacitor - CE Mfg., 525V, 30/20/20/20 μF

Product:
Capacitor - CE Mfg., 525V, 30/20/20/20 μF

Question:
On the second image it shows the wiring of the can style capacitor, on the face of the capacitor, there is a triangle, 1/2 moon and a square. What do they mean?