What is the hallway?

[HSH]

I have never understood what a hallway in a forum should be. Is it for those who just walk through, or for those who enter and haven't found the right room yet?
Seems so.
Sorry for the question, but you need a starter here, anyhow.

[brujo]

It was created in Nagual.com in order to have an in between place. I used it because sometimes I´m not sure where somethings should be posted.

A time back I refered to is as the Hollow mirror.