-Now select a login protocol to use, from the \q{Protocol} buttons.
-For a login session, you should select Telnet, Rlogin or SSH. See
-\k{which-one} for a description of the differences between the three
-protocols, and advice on which one to use. The fourth protocol,
-\e{Raw}, is not used for interactive login sessions; you would
-usually use this for debugging other Internet services.
+Now select a login \i{protocol} to use, from the \q{Connection type}
+buttons. For a login session, you should select \i{Telnet},
+\i{Rlogin} or \i{SSH}. See \k{which-one} for a description of the
+differences between the three protocols, and advice on which one to
+use. The fourth protocol, \I{raw protocol}\e{Raw}, is not used for
+interactive login sessions; you would usually use this for debugging
+other Internet services (see \k{using-rawprot}). The fifth option,
+\e{Serial}, is used for connecting to a local serial line, and works
+somewhat differently: see \k{using-serial} for more information on
+this.