\fBmonkeysphere-authentication\fP takes various subcommands.
.TP
.B setup
-Setup the server for Monkeysphere user authentication. `s' may be
-used in place of `setup'.
+Setup the server for Monkeysphere user authentication. This command
+is idempotent, which means it can be run multiple times to make sure
+the setup is correct, without adversely affecting existing setups.
+`s' may be used in place of `setup'.
.TP
.B update-users [ACCOUNT]...
Rebuild the monkeysphere-controlled authorized_keys files. For each