By default, logins are turned off, and anybody who connects to the server may join in the game. However, by setting the login option in the define options block to on, players will be prompted for a username and password before they can connect.
When the register option is on, players can register a login for themselves automatically, and join the game immediately. When register is off, logins can only be added manually by the server administrator.
Logins can be added manually once a game is in progress by selecting Users from the Game menu, and clicking Add. Login data is saved to a file which has the same name as the ASL or CAS file, but with the extension QLF. This is a plain text file which can be edited in any text editor. The format of each line is:
user name; password