For each user, the following parameters are available :
- Username
- For this field, you may either enter a specific username, or choose the
    Anonymous user option in which case the permissions will apply
    to any user who is not in the User Permissions list.
 
- Password
- The password required by this user when logging in. If None,
    then no password is needed. 
 
- Hosts
- The IP address or hostname of the host this user is allowed to login from.
    This field can also contain an SQL regular expression matching multiple
    hosts, like 192.168.1.% or %.foo.com. 
 
- Permissions
- The MySQL operations this user is allowed to perform on any
    database.