+nnfolder-generate-active-file} \e$B$r;H$&;v$,$G$-$^$9!#$3$l$OD9$$%U%!%$%kL>\e(B
+\e$B$r;H$C$F$$$k$H$-$K$N$_F0:n$7$^$9$,!#\e(B
+
+@node Comparing Mail Backends
+@subsubsection \e$B%a!<%k%P%C%/%(%s%I$NHf3S\e(B
+
+\e$B$^$:!"MQ8l$H$7$F!"\e(B@dfn{\e$B%P%C%/%(%s%I\e(B} (backend) \e$B$ODc<!$N@\B3J}K!$N$?$a$N\e(B
+\e$BIaDL$N8l$G$9\e(B---\e$B$b$7K>$`$J$i!"F)2aE*$G$"$j!"$=$l$O2?$+$r@.$7?k$2$k$b$N$G\e(B
+\e$B$9!#$=$N$3$3$m$O!"%a!<%k$O$I$3$+$i$+Mh$J$1$l$P$J$i$:!"E,@Z$J%P%C%/%(%s%I\e(B
+\e$B$NA*Br$O!"%a!<%k$r\e(B gnus \e$B$N$9$06a$/$K<hF@$9$k$?$a$KMW5a$5$l$k!"$H$$$&$b$N\e(B
+\e$B$G$9!#\e(B
+
+\e$BF1$835G0$,\e(B Usenet \e$B<+?H$K$bB8:_$7$^$9!#5-;v$X$N@\?($O:#F|$G$O!"IaDL$O\e(B
+NNTP \e$B$G$J$5$l$^$9$,!"@N!9$NM+]5$J?<Lk$N;~Be$O!"3'$O5-;v$,B8:_$9$k%^%7%s\e(B
+(\e$B:#F|$G$O\e(B NNTP \e$B%5!<%P!<$H8F$V$b$N\e(B) \e$B$G%j!<%@!<$rF0$+$7!"%j!<%@!<$+$i$N@\\e(B
+\e$BB3$O!"D>@\5-;v$N%G%#%l%/%H%j!<%9%W!<%k$KF'$_9~$`$H$$$&$b$N$G$7$?!#$=$l$G\e(B
+\e$B$b!"$?$^$?$^%5!<%P!<\e(B (\e$B$b$7$/$O!"\e(BNFS \e$B$G%9%W!<%k$,FI$a$k$h$&$J>l9g\e(B) \e$B$K$$$k\e(B
+\e$B$h$&$J>l9g$O!"$3$l$i$NJ}K!$rA*$V$?$a$K\e(B @code{nntp} \e$B$d\e(B @code{nnspool} \e$B%P%C\e(B
+\e$B%/%(%s%I$N$I$A$i$+$rA*$V$3$H$,$G$-$^$7$?!#\e(B
+
+\e$B%a!<%k%P%C%/%(%s%I$rA*Br$9$k$3$H$N%4!<%k$O!"85$N7A<0$r07$&$N$KE,$7$?J}K!\e(B
+\e$B$H!">-Mh;HMQ$9$k$?$a$KJXMx$J7A<0$K%a!<%k$r;D$9$3$H$NN>J}$rF1;~$KI=8=$9$k\e(B
+\e$B$3$H$G$9!#$=$l$>$l$K$ONI$$E@$H0-$$E@$,$$$/$D$+$"$j$^$9\e(B:
+
+@table @code
+@item nnmbox
+
+UNIX \e$B%7%9%F%`$ONr;KE*$KC10l$N!"Hs>o$K0lHLE*$J!">e<j$/Dj5A$5$l$?7A<0$r;}$C\e(B
+\e$B$F$$$^$9!#A4$F$N%a%C%;!<%8$OC10l$N\e(B @dfn{\e$B%9%W!<%k%U%!%$%k\e(B} \e$B$KE~Ce$7!"@55,\e(B
+\e$BI=8=\e(B @samp{^From_} \e$B$K9gCW$9$k9T$G6h@Z$i$l$F$$$^$9\e(B \e$B!#\e(B(\e$B;d$N\e(B @samp{_} \e$B$N5-\e(B
+\e$B9f$N;HMQ$O%9%Z!<%9$r0UL#$9$k$?$a$G!"$3$NNc$G$O$3$l$O\e(B RFC \e$B$G;XDj$5$l$F$$\e(B
+\e$B$k\e(B @samp{From:} \e$B%X%C%@!<$GL5$$$3$H$rL@$i$+$K$9$k$?$a$G$9!#\e(B) Emacs \e$B$O!"$=\e(B
+\e$B$l$K\e(B gnus \e$B$b!"Nr;KE*$K\e(B Unix \e$B4D6-$+$i9-$^$j$^$7$?$N$G!"85$N\e(B mailbox \e$B7A<0\e(B
+\e$B$r$"$^$j$0$A$c$0$A$c$K$7$J$$$H$$$&$N$O!":G$b4JAG$JJ}K!$G$9!#$G$9$+$i!"$3\e(B
+\e$B$N%P%C%/%(%s%I$rA*$V$H!"K\Ev$N%9%W!<%k$+$i%a!<%k$r<hF@$7$F!"\e(Bgnus \e$B$N9%$`\e(B
+\e$B%G%#%l%/%H%j!<$K%a!<%k$r0\F0$9$k$?$a$N\e(B gnus \e$B$N<g$J3hF0$O!"C1$K!"<B9T2aDx\e(B
+\e$B$G2?$b\e(B (\e$BI>2A$G$-$k\e(B) \e$BJQ99$r$;$:$KJ#@=$9$k$3$H$G$9!#$=$l$O\e(B gnus \e$B$N4D6-$N;H\e(B
+\e$BMQ2DG=HO0O$K%a!<%k$r0\F0$9$k\e(B ``\e$B:G$b6r$+$J\e(B''\e$BJ}K!$G$9!#$3$l$ODj$a$i$l$?>l\e(B
+\e$B=j$K0\F0$9$k$N$rB.$/$7$^$9$,!"\e(Bgnus \e$B$,$I$3$K2?$,$"$k$+$rD4$Y$k$H$-$O!"2r\e(B
+\e$B@O$,CY$/$J$j$^$9!#\e(B
+
+@item nnbabyl
+
+\e$B$`$+$7$`$+$7!"\e(BTOPS \e$B$H8F$P$l$k%*%Z%l!<%F%#%s%0%7%9%F%`$d!";w$?$h$&$J$b$N\e(B
+\e$B$r<B9T$7$F$$$k\e(B DEC-10 \e$B$H\e(B DEC-20 \e$B$H$$$&$b$N$,$"$j!"IaDL$N\e(B (\e$BM#0l$N\e(B?) \e$B%a!<\e(B
+\e$B%k$rFI$`4D6-$O\e(B Babyl \e$B$H8F$P$l$k$b$N$G$7$?!#$=$N%7%9%F%`$KCe$$$?%a!<%k$,\e(B
+\e$B$I$N$h$&$J7A<0$K$J$C$F$$$?$+$OCN$j$^$;$s$,!"\e(BBabyl \e$B$O%a!<%k$,JQ49$5$l$k!"\e(B
+\e$B$=$lMQ$NFbIt7A<0$r;}$C$F$*$j!"<g$K!"\e(BBabyl \e$BFCM-$N%X%C%@!<$H>uBV%S%C%H$r%U%!\e(B
+\e$B%$%k$N$=$l$>$l$N%a%C%;!<%8$N@hF,$K2C$($k$3$H$r$7$F$$$^$7$?!#\e(BRMAIL \e$B$O\e(B
+Emacs \e$B$N:G=i$N%a!<%k%j!<%@!<$G!"\e(BRichard Stallman \e$B$K$h$C$F=q$+$l!"\e(B
+Stallman \e$B$O$=$N\e(B TOPS/Babyl \e$B4D6-$N=P?H$G$"$k$?$a!"\e(BRMAIL \e$B$r4{$KB8:_$7$F$$\e(B
+\e$B$?%a!<%k%U%!%$%k$N0lB2$rM}2r$9$kMM$K=q$-$^$7$?!#\e(BGnus (\e$B$3$NLdBj$K4X$7$F$O\e(B
+VM \e$B$b\e(B) \e$B$3$N7A<0$r%5%]!<%H$7B3$1$F$$$^$9!#$=$l$O!"$=$N%a!<%i!<FCM-$N%X%C\e(B
+\e$B%@!<\e(B/\e$B%S%C%H$H$$$&$b$N$,$J$+$J$+<A$,NI$$$H9M$($i$l$F$$$k$+$i$G$9!#\e(BRMAIL
+\e$B<+?H$b$b$A$m$s$^$@B8:_$7$F$$$F!"$^$@\e(B Stallman \e$B$K$h$C$F0];}$5$l$F$$$^$9!#\e(B
+
+\e$B>e$N7A<0$NN>J}$O%a!<%k$r%U%!%$%k%7%9%F%`$NC1FH$N%U%!%$%k$KF~$l!"%a!<%k$r\e(B
+\e$B8+$k$?$S$K!"%U%!%$%kA4BN$r2r@O$7$J$1$l$P$J$j$^$;$s!#\e(B
+
+@item nnml
+
+@code{nnml} \e$B$O$[$H$s$I\e(B @code{nnspool} \e$B@\B3$N\e(B Usenet \e$B%7%9%F%`$rA`:n$7$F$$\e(B
+\e$B$k$h$&$J46$8$N$9$k%P%C%/%(%s%I$G$9!#\e(B(\e$B<B:]$N$H$3$m!"$9$4$/0JA0$K!"\e(B
+@code{nnml} \e$B$O\e(B @code{nnspool} \e$B$+$i;^J,$+$l$7$?$b$N$@$H;W$$$^$9!#\e(B)
+\e$B%a!<%k$O85$N%9%W!<%k%U%!%$%k$+$i<h$j=P$5$l!"$=$l$+$i8D!9$N%U%!%$%k$K\e(B 1:1
+\e$B$GJ,$1$i$l$^$9!#\e(BUsenet \e$BMM<0$N%"%/%F%#%V%U%!%$%k\e(B (INN \e$B$d\e(B CNews \e$B$K4p$E$$$?\e(B
+\e$B%K%e!<%9%7%9%F%`$G\e(B (\e$BNc$($P\e(B) @file{/var/lib/news/active} \e$B$d!"F0;l\e(B
+@samp{NNTP LIST} \e$B$GJV$5$l$k$b$N$KN`;w$7$?$b$N\e(B) \e$B$r0];}$7!":#$+$i$@$H$+$J\e(B
+\e$B$jA0$K\e(B @sc{nntp} \e$B%5!<%P!<$N$?$a$KDj5A$5$l$F$$$k!"\e(B@dfn{overview} \e$B%U%!%$%k\e(B
+\e$B$b!"%0%k!<%W$XF~$k$H$-$N8zN($N$?$a$K:n@.$7$^$9!#%a!<%kJ,3d$G$O!"$?$/$5$s\e(B
+\e$B$N%U%!%$%k$N:n@.$H!"\e(B@code{nnml} \e$B%"%/%F%#%V%U%!%$%k$N99?7!"%a%C%;!<%8Kh$N\e(B
+overview \e$B$X$NDI2C$N$?$a$KCY$/$J$j$^$9$,!";HMQ;~$K$O%"%/%F%#%V%U%!%$%k$H\e(B
+overview \e$B$G$N:w0z5!G=$K$h$j!"$H$F$D$b$J$/B.$/$J$j$^$9!#\e(B
+
+@code{nnml} \e$B$O\e(B @dfn{inode} \e$B$rHs>o$K$?$/$5$s>CHq$7$^$9!#$9$J$o$A!"%U%!%$\e(B
+\e$B%k%7%9%F%`$G?7$7$$%U%!%$%k$rF~$l$k$?$a$N2DG=$J>l=j$rDj5A$9$k;q8;$r$?$/$5\e(B
+\e$B$s@jM-$7$^$9!#%7%9%F%`4IM}<T$O!"$+$C$A$j$7$?6&M-%U%!%$%k%7%9%F%`$G$NBgNL\e(B
+\e$B$N\e(B inode \e$B$N@jM-$r2w$/;W$$$^$;$s!#$7$+$7!"%U%!%$%k%7%9%F%`$,<+J,<+?H$N$b\e(B
+\e$B$N$G$"$k8D?M%^%7%s>e$G@83h$7$F$$$k$J$i!"\e(B@code{nnml} \e$B$OHs>o$KBg$-$JMxE@$,\e(B
+\e$B$"$j$^$9!#\e(B
+
+\e$B$^$?!"\e(BFAT16 \e$B$N\e(B Windows \e$B$N@$3&$K@8$-$F$$$k$J$i!"LdBj$,$"$k$G$7$g$&!#$?$/\e(B
+\e$B$5$s$N>.$5$J%U%!%$%k$GB?$/$N>l=j$r<h$i$l$F$7$^$$$^$9!#\e(B
+
+@item nnmh
+
+Rand MH \e$B%a!<%k1\Mw%7%9%F%`$O\e(B UNIX \e$B%7%9%F%`$K$+$J$jD9$$4VB8:_$7$F$$$^$9!#\e(B
+\e$B%a%C%;!<%8$N%9%W!<%k%U%!%$%k$r8D!9$N%U%!%$%k$KJ,3d$9$k$3$H$K$h$jA`:n$7$^\e(B
+\e$B$9$,!":w0z5!G=$,>/$7$+!"A4$/$J$$$+$H$$$&DxEY$G$9\e(B -- @code{nnmh} \e$B$O0UL#E*\e(B
+\e$B$K$O\e(B ``@code{nnml} \e$B$K%"%/%F%#%V%U%!%$%k$H\e(B overview \e$B$N$J$$$b$N\e(B'' \e$B$HEy2A$G\e(B
+\e$B$9!#$3$l$O5DO@$N$"$k$H$3$m$G$9$,!":G0-$NA*Br$G$9!#$H$$$&$N$O!"8D!9$N%U%!\e(B
+\e$B%$%k$N:n@.$NCY$5$,!"%0%k!<%W$G2?$,?7$7$$$+$rCN$k$H$-$N2r@O$N$?$a$N;HMQ$N\e(B
+\e$BCY$5$,7k$SIU$/$+$i$G$9!#\e(B
+
+@item nnfolder
+
+\e$B4pK\E*$K\e(B @code{nnfolder} \e$B$N8z2L$O%0%k!<%WKh$N\e(B @code{nnmbox} (\e$B>e$G@bL@$5\e(B
+\e$B$l$F$$$k:G=i$NJ}K!\e(B) \e$B$G$9!#$9$J$o$A!"\e(B@code{nnmbox} \e$B<+?H$O\e(B *\e$BA4$F\e(B* \e$B$N%a!<%k\e(B
+\e$B$r0l$D$N%U%!%$%k$KF~$l$^$9\e(B; @code{nnfolder} \e$B$O%a!<%k%0%k!<%W$=$l$>$l$,\e(B
+Unix mail box \e$B%U%!%$%k$r;}$D$h$&$K>/$7:GE,2=$r$7$^$9!#\e(B@code{nnmobx} \e$B$h$j\e(B
+\e$B$b!"$=$l$>$l$N%0%k!<%W$rJL$K2r@O$9$k$N$GB.$/!"$=$N$&$(%a!<%k$r0\F0$5$;$k\e(B
+\e$B$N$K:G>.8B$NO+NO$rMW5a$9$kC1=c$J\e(B Unix mail box \e$B7A<0$rDs6!$7$^$9!#2C$($F!"\e(B
+gnus \e$B$,$=$l$>$l$NJL$N%0%k!<%W$K$I$N$/$i$$$N%a%C%;!<%8$,$"$k$+$rD4$Y$k$?\e(B
+\e$B$a$N\e(B ``\e$B%"%/%F%#%V\e(B'' \e$B%U%!%$%k$r0];}$7$^$9!#\e(B
+
+\e$B$b$7$?$/$5$s$NNL$N%a%C%;!<%8$r<u$1<h$k$3$H$,M=A[$5$l$k%0%k!<%W$,$"$k$J$i!"\e(B
+@code{nnfolder} \e$B$O:GA1$NA*Br$G$O$"$j$^$;$s$,!"$=$l$J$j$NNL$N%a!<%k$7$+<u\e(B
+\e$B$1<h$i$J$$$J$i!"$*$=$i$/\e(B @code{nnfolder} \e$B$OA4$F$NCf$G0lHVE,$7$?%P%C%/%(\e(B
+\e$B%s%I$G$7$g$&!#\e(B
+
+@end table
+