With the registered version of
MatStream it is possible to create users and user groups.
When you have been added as a user, then you can use this username and a password
for logging in to MatStream.
Type your username and password in at the fields of the login window and select the Ok button (note that the password is case sensitive).
When you login for the first time to MatStream you have to use the predefined username "Guest", without a password. This is also the only user available for the shareware version.