-@item gnus-version-expose-system
-@vindex gnus-version-expose-system
-
-\e$B%G%#%U%)%k%H$G%7%9%F%`%?%$%W\e(B (@samp{i686-pc-linux} \e$B$N$h$&\e(B
-\e$B$J\e(B @code{system-configuration} \e$BJQ?t$NCM\e(B) \e$B$,<+F0E*$K@8@.$5$l\e(B
-\e$B$k\e(B User-Agent \e$B%X%C%@!<$K8=$l$^$9!#$=$l$O\e(B (\e$B<g$KH~E*463P$K$h$C$F\e(B) \e$B>C$9$3$H\e(B
-\e$B$,K>$^$l$k$+$b$7$l$^$;$s!#$=$&$$$&>l9g$O!"$3$l$r\e(B @code{nil} \e$B$K$7$F2<$5$$!#\e(B
+@item gnus-user-agent
+@vindex gnus-user-agent
+@cindex User-Agent
+
+(\e$BLuCm\e(B: T-gnus \e$B$G$O8=:_$3$NJQ?t$K$h$k@)8f$O5!G=$7$^$;$s!#\e(B) \e$B$3$NJQ?t$O!"$I\e(B
+\e$B$N>pJs$,\e(B User-Agent \e$B%X%C%@!<$KDDNs$5$l$k$+$r@)8f$7$^$9!#$=$l$O<!$N%7%s%\\e(B
+\e$B%k$^$?$OJ8;zNs$N$&$A$N$I$l$+$G$"$k$3$H$,$G$-$^$9\e(B: @code{full} (\e$BA4>pJs$r\e(B
+\e$B8+$;$k!"$9$J$o$A\e(B Emacs \e$B$H\e(B Gnus \e$B$N%P!<%8%g%s$H%7%9%F%`9=@.\e(B)\e$B!"\e(B
+@code{emacs-gnus} (Emacs \e$B$H\e(B Gnus \e$B$N%P!<%8%g%s$@$1$r8+$;$k\e(B)\e$B!"\e(B
+@code{emacs-gnus-type} (@code{emacs-gnus} \e$B$HF1$8!\%7%9%F%`%?%$%W\e(B)\e$B!"\e(B
+@code{gnus} (Gnus \e$B$N%P!<%8%g%s$@$1$r8+$;$k\e(B)\e$B!"$^$?$O9%$_$NJ8;zNs!#$3$l$r\e(B
+\e$BJ8;zNs$K$9$k$H$-$O!"@5$7$$%U%)!<%^%C%H$r;H$C$F$$$k$3$H$r3NG'$7$F2<$5\e(B
+\e$B$$\e(B (RFC2616 \e$B;2>H\e(B)\e$B!#\e(B