ToME: the Tales of Maj'Eyal

What does the '&' tile represent in the dungeon? Do you interact with it in any way?

The purple &s in dungeons are the exits for random escort quests. The person you're escorting will head for them, and give you a reward if they reach them alive.

thanks!
I literally just figured it out as I successfully completed an escort quest. Still getting used to the new game. That one was my first success!