How to send my coordinates to alliance members?

It doesn't work anymore. At least in the state 887, it doesn't work.

Go to the world map on your location and you will see the coordinates at the bottom (X: .. Y: ..)

You can send these coordinates (or any in the world) to the alliance chat by tapping on your location and then tapping the small share icon that appears to the right of the coordinates that pop up. You can share to alliance or state chat.

You can also bookmark locations with the icon to the left.