multiple users on one screen session

I got this info from here.

Suppose larsr and bill have accounts on a machine stella.
Thanks to 'screen' they can easily share a terminal window.

both log in to stella (for instace with ssh).

larsr starts screen

• screen

and enables multiuser mode

• CTRL-a :multiuser on

and permit bill to connect

• CTRL-a :acladd bill

Now bill can connect to the screen by typing

• screen -x larsr/

Note the '/'. If larsr has many screens, the screen id is entered after the '/'.