The projector pointer can link to multiple projectors. This is useful, but I kept forgetting to unlink. I would to see two changes:

1. Add a tooltip that shows the coordinates of each linked projector
2. When linking or unlinking a projector, show how many projectors are linked in the chat message.

It would also be nice if there was a way to unlink everything but I'm not sure what the best solution is.

Added the tooltip in 863d423.