\e$B%+!<%=%k$r\e(B (\e$B:G=i$N%3%m%s$N8e$m$NBe$o$j$K\e(B) \e$BCV$/>l=j!#\e(B
@item &user-date;
\e$B7P2a;~4V$NMM<0!#$$$m$$$m$JMM<0\e(B
-\e$B$,\e(B @code{gnus-summary-user-date-format-alist} \e$B$GDj5A$5$l$F$$$^$9!#\e(B
+\e$B$,\e(B @code{gnus-user-date-format-alist} \e$B$GDj5A$5$l$F$$$^$9!#\e(B
@item u
\e$BMxMQ<TDj5A;XDj;R!#%U%)!<%^%C%HJ8;zNs$NCf$N<!$NJ8;z$O1Q;z$G$J$1$l$P$J$j$^\e(B
\e$B$;$s!#$3$l$K$h$j\e(B Gnus \e$B$O4X?t\e(B @code{gnus-user-format-function-}@var{x} \e$B$r\e(B
\e$B$=$l$>$l$N4X?t$OFs$D$N%9%l%C%I$r$H$j!":G=i$N%9%l%C%I$,$b$&0lJ}$h$j@h$KJB\e(B
\e$B$YBX$($i$l$k$Y$-$G$"$l$P\e(B @code{nil} \e$B$G$J$$CM$rJV$7$^$9!#<B:]$NJB$YBX$($O!"\e(B
\e$BIaDL$=$l$>$l$N%9%l%C%I$N:,K\$@$1$rD4$Y$k$3$H$K$h$C$F9T$J$o$l$k$3$H$K5$$r\e(B
-\e$BIU$1$F$/$@$5$$!#\e(B
+\e$BIU$1$F$/$@$5$$!#$?$@$7\e(B @code{gnus-thread-sort-by-most-recent-number} \e$B$*\e(B
+\e$B$h$S\e(B @code{gnus-thread-sort-by-most-recent-date} \e$B$O!"$3$N5,B'$K=>$$$^$;\e(B
+\e$B$s!#\e(B
\e$BFs$D0J>e$N4X?t$r;H$&>l9g!"JB$YBX$($NBh0l$N80$O%j%9%H$N:G8e$N4X?t$G$J$1$l\e(B
\e$B$P$J$j$^$;$s!#JB$YBX$(4X?t$N%j%9%H$N$J$k$Y$/@hF,$K!"$*$=$i$/>o\e(B