This command remotely identifies a user without giving the user the password. The user will show as being identified to the room or nickname.
/msg operserv identify joeuser nikb Froxilanthi
/msg operserv identify nikb #webchat webPass
If you wish to give a nick or room to a user this is a good way to do so. You might not want the user to know the password, since some people reuse passwords for multiple things. But this way they can be seen as fully identified and can change the password without ever being told the original password. This command should only be used when you are willing to give someone the nick or room you are giivng them access to.
See also FTRANSFER