\e$B$b$&0l2s\e(B @kbd{/} \e$B$r2!$9$H!"%9%l%C%I$rJD$8$^$9!#\e(B
prefix argument \e$B$D$-$G\e(B @kbd{/} \e$B$r2!$9$H!"A4$F$N;R%9%l%C%I$r3+$-$^$9!#\e(B
-@kbd{t} \e$B$+$i;O$^$k%3%^%s%I$G!"$=$N%9%l%C%I$KB0$9$k%a%C%;!<%8$KBP$7$F0l3g$7$F=hM}$r9T$&$3$H$,$G$-$^$9!#\e(B
+@kbd{[} \e$B$G%5%^%j$NA4$F$N%9%l%C%I$r3+$-!"\e(B@kbd{]}\e$B$GA4$F$N%9%l%C%I$rJD$8$^\e(B
+\e$B$9!#\e(B
+
+@kbd{t} \e$B$+$i;O$^$k%3%^%s%I$G!"$=$N%9%l%C%I$KB0$9$k%a%C%;!<%8$KBP$7$F0l3g\e(B
+\e$B$7$F=hM}$r9T$&$3$H$,$G$-$^$9!#\e(B
+
@subsection \e$B%9%l%C%I$N7R$.$J$*$7\e(B
If you type @kbd{/} key once again, the thread is closed.
With prefix argument, @kbd{/} opens all children threads.
+If you type @kbd{[}, opens all threads in summary. @kbd{]} closes all
+threads.
+
Commands with the key binding that begins with @kbd{t} executes commands
on the messages in the thread.