@item wl-summary-update-confirm-threshold
@vindex wl-summary-update-confirm-threshold
\e$B=i4|@_Dj$O\e(B 500\e$B!#$3$NCM$h$j%5%^%j$N99?7?t$,B?$$>l9g!"0lItJ,$@$199?7$9$k$+\e(B
-\e$B$I$&$+!"<ALd$7$^$9!#\e(B`nil' \e$B$K$9$k$H!"3NG'$;$:$KA4$F$r99?7$7$^$9!#\e(B
+\e$B$I$&$+!"<ALd$7$^$9!#\e(B@code{nil} \e$B$K$9$k$H!"3NG'$;$:$KA4$F$r99?7$7$^$9!#\e(B
@item wl-summary-always-sticky-folder-list
@vindex wl-summary-always-sticky-folder-list
@item wl-summary-update-confirm-threshold
@vindex wl-summary-update-confirm-threshold
The initial setting is 500. If updated message number is larger than
-this value, confirm whether drop them or not. If `nil', all the message
+this value, confirm whether drop them or not. If @code{nil}, all the message
will be updated without confirmation.
@item wl-summary-always-sticky-folder-list