If you provider requires a login sequence en text mode (this is the case is SLIP and PPP protols are available, or if there is an intermediate gateway), you must fill these fields with the messages sended by the server and the responses to reply.

Keywords:
%l replace the login typed in the preceding box.
%p replace the password typed in the preceding box.
%r sends a [CR].
%w waits for 5 seconds.