-Password authentication is required for packages uploading.
-You have to store your authentication data in @option{-passwd} file in
-following format:
+Password authentication is required for packages uploading. Passwords
+are dynamically changed through the FIFO file. You have to create it and
+use in @option{-passwd} option. Optionally, to list currently present
+logins use another FIFO and @option{-passwd-list} option: