@item
If the option @code{--daemon} was specified, it calls
-@code{server-start} and detaches from the controlling terminal.
-@xref{Emacs Server,,, emacs, The GNU Emacs Manual}.
+@code{server-start}, and on Posix systems also detaches from the
+controlling terminal. @xref{Emacs Server,,, emacs, The GNU Emacs
+Manual}.
@item
If started by the X session manager, it calls