* 2.14.x \e$B$+$i\e(B 2.16.0 \e$B$X$NJQ99E@\e(B
+** spam \e$B$H$7$FEPO?$7$?%a%C%;!<%8$K\e(B spam \e$B%^!<%/$rIU$1$^$9!#\e(B
+
+** non-spam \e$B$H$7$FEPO?$7$?%a%C%;!<%8$+$i\e(B spam \e$B%^!<%/$r<h$j=|$-$^$9!#\e(B
+
+** ESEARCH (RFC4731) \e$B$,%5%]!<%H$5$l$^$7$?!#\e(B
+
** \e$B?75,%*%W%7%g%s\e(B elmo-imap4-set-seen-flag-explicitly \e$B$,DI2C$5$l$^$7$?!#\e(B
** pipe \e$B$G$N%3%T!<$G?75,%a%C%;!<%8$,<h$j9~$a$J$/$J$k%P%0$,=$@5$5$l$^$7$?!#\e(B