+@item -p @var{password}
+@item --password=@var{password}
+Specifies the password to use to decrypt an encrypted SPSS system
+file. If this option is not specified, @command{pspp-convert} will
+prompt interactively for the password as necessary.
+
+Be aware that command-line options, including passwords, may be
+visible to other users on multiuser systems.
+