how does the map plugin know a room is forsaken + magic walls in aardwolf

Normally the title of the room for the map plugin is green, but it turns red when you enter a magic walled forsaken room like the cobra pit in Raganatittu.

How does it check that?

In the underdark you can't recall but the text is still green, it only goes red when there are magic walls.

Would like to know how it's done.

I don't know. As far as I can see in my version the room name colour is fixed. Maybe you have a modified version.

Wow nevermind... I was wrong. Gallows shows up green and has magic walls =/. My bad.

Pk rooms show up in red.