L This message is being displayed by the BULLETIN facility.  This is a non-DECN facility, so it is not described in the manuals.  Messages can be submitted byM using the BULLETIN command.  System messages, such as this one, are displayed N in full, but can only be entered by privileged users.  Non-system messages canL be entered by anyone, but only their topics will be displayed at login time,M and will be prompted to optionally read them.  (This prompting feature can be N disabled).  All bulletins can be reread at any time unless they are deleted orI expire.  For more information, see the on-line help (via HELP BULLETIN).  