When you want to suspend an rlogin connection so you can return to it later, type the tilde character (~) followed by Ctrl-Z. The rlogin connection becomes a stopped process and you are placed back at the machine from which you logged in.
To reactivate the connection, type fg. Alternatively, you can type the percentage sign (%) followed by the process number of the stopped process (the default for %, if no process number is included, is the process most recently suspended).
$ rlogin lonesome Password: Last login: Tue Jan 7 08:12:49 from blue Sun Microsystems, Inc. SunOS 5.1 October 1992 (The following command done on lonesome.) ~^Z (You may not see the ^Z on the screen.) Stopped (The following command done on blue.) $ pwd /home/keithp $ % rlogin lonesome (The following command done on lonesome.) $ logout Connection closed. $