The player can place a Ping at the location where the cursor is by pressing Alt + Left Mouse Button . The ping indicator shows up as an exclamation mark and is now visible on the on-screen Compass and Map. The ping also makes a sound coming from the ping location. Pings can be used to point at things for other players to see.
Sometimes the player can get stuck in ping mode after using Alt + Tab ↹ to switch windows out of the game, resulting in every click being interpreted as a ping regardless of if Alt is pressed. Press Alt again to resolve this, returning clicking functionality to normal.