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\begin{abstract}
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\section{$B$O$8$a$K(B}

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\section{$B%G%#%l%/%7%g%s(B} \label{direction}

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\section{$B%\%C%/%9(B}

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\subsection{$B0[%G%#%l%/%7%g%s$N%\%C%/%9(B}

$B0l$D$NJ8=q(B, $B0lKg$N%Z!<%8$G$"$C$F$bItJ,$K$h$C$FAH$_J}8~$rJQ$($i$l$k$h$&$K(B,
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$B$?$H$($P(B, $BI=$NCf$G9`L\$K$h$C$F=DAH$_(B/$B2#AH$_$r;H$$J,$1$k$3$H$,2DG=$K$J$l$P(B
$BI=8=NO$,A}$9$3$H$K$J$k(B.
$B$^$?(B, $B=DAH$_Cf$G?t7e$N?t$rI=8=$9$k$H$-(B,
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$BAH$_J}8~$N:.:_$r5v$9$H$$$&$3$H$O(B, $B0l$D$NJ8=q$K(B,
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$B$3$l$i$NAH$_J}8~$N0[$J$k%\%C%/%9$r6hJL$9$k$3$H$K$7$?(B.

\verb|\hbox|, \verb|\vbox|$B$J$I$G:n$i$l$k%\%C%/%9$O(B, $BDL>o(B,
\verb|\hbox|, \verb|\vbox|$B$,<B9T$5$l$?$H$-$N(B\TeX $B$N%G%#%l%/%7%g%s$H(B
$BF1$8%G%#%l%/%7%g%s$r;}$D(B.
$B$7$+$70J2<$N$h$&$K(B\verb|\yoko|$B%W%j%_%F%#%V$r;H$&$H(B,
$B=D%G%#%l%/%7%g%s$NCf$K(B,
`123'$B$H$$$&FbMF$N2#%G%#%l%/%7%g%s$r;}$D(Bh$B%\%C%/%9$rCV$/$3$H$b$G$-$k(B.
\begin{quote}
	$B!J=D%G%#%l%/%7%g%s!K(B\\
	\verb|\hbox{\yoko 123}|
\end{quote}

\verb|\hbox|, \verb|\vbox|$B$G%G%#%l%/%7%g%s$N0[$J$k%\%C%/%9$r:n$k$H(B,
$B2#%G%#%l%/%7%g%s$r;}$D%\%C%/%9$O(B, $B=DAH$_Cf$G$O(B
$W_t=H_y+D_y$, $H_t=W_y/2$, $D_t=W_y/2$
$B!J(B$H_y$$B$O(B, $B%\%C%/%9$N2#%G%#%l%/%7%g%sCf$K$*$1$k(B$H$$B!K$H$J$k(B.
$B=D%G%#%l%/%7%g%s$r;}$D%\%C%/%9$O(B, $B2#AH$_Cf$G$O(B
$W_y=H_t+D_t$, $H_y=W_t$, $D_y=0$$B$H$J$k(B.

\begin{quote} \begin{picture}(50,24)(0,0)
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$BFs$D$N>l9g$G(B$W$, $D$, $H$$B$N;;=PJ}K!$,0[$J$k$N$O(B,
$B=DAH$_(B, $B2#AH$_$G$NJ8;z$N07$$$N0c$$!J(B\ref{jfont}$B;2>H!K$rH?1G$7$F$$$k(B.

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\begin{quote}
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\end{quote}
$B$H=q$1$P(B, $B%\%C%/%9%l%8%9%?$N(B123$BHV$K(B\angle{$BJ8(B}$B$rFbMF$H$9$k(B
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\begin{quote} \begin{verbatim}
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$B$N$h$&$K(B, \verb|\wd|, \verb|\dp|, \verb|\ht|$B$r;H$C$F(B
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\begin{quote} \begin{verbatim}
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\end{verbatim} \end{quote}
$B$N$h$&$K$I$N%G%#%l%/%7%g%s$G;HMQ$5$l$k$+$o$+$i$:(B,
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\begin{quote}
	\verb|\hbox{\yoko \global\wd123=|\angle{$B=D9b$5(B}\verb|}|\\
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	\verb|\hbox{\yoko\box123}|
\end{quote}
$B$N$h$&$K=q$1$P(B, 3$B9TL\$N(B\verb|\copy123|$B$N(B$W$$B$O(B\angle{$B=D9b$5(B}$B$G$"$j(B,
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$B$3$N>l9gCm0U$7$J$1$l$P$J$i$J$$$N$O(B,
\verb|\hbox|, \verb|\vbox|$B$G:n$i$l$?%\%C%/%9$O(B
$W_t=H_y+D_y$, $W_y=H_t+D_t$$B$G$"$k$,(B,
\verb|\wd|, \verb|\dp|, \verb|\ht|$B$r;H$C$F(B$W$, $D$, $H$$B$rJQ99$9$k$H(B
$B$3$N4X78$OI,$:$7$b@.N)$7$J$$$H$$$&$3$H$G$"$k(B.
$B%G%#%l%/%7%g%s$K$h$C$F%\%C%/%9$NBg$-$5$,JQ2=$9$k$3$H$K$J$k(B.

\subsection{$B0[%G%#%l%/%7%g%s$N%"%8%c%9%H(B, $B%$%s%5!<%H(B}

v$B%b!<%I$dFbIt(Bv$B%b!<%I$NCf$N(Bh$B%\%C%/%9$NCf$K(B\verb|\vadjust|$B$r;H$&$H(B,
v$B%j%9%H$N$=$N%\%C%/%9$N<!$K(B, \verb|\vadjust|$B$NFbMF$,A^F~$5$l$k(B.
$B0J2<$N$h$&$K%G%#%l%/%7%g%s$N0[$J$k(Bh$B%\%C%/%9$NCf$G$b(B
$B;Y>c$J$/(B\verb|vadjust|$B$,;H$($k$h$&$K$7$?(B.
\begin{quote}
	$B!J=D%G%#%l%/%7%g%s(B, v$B%b!<%I!K(B\\
	\verb|\hbox{\yoko |\ldots\verb|\vadjust{|\ldots\verb|}|\ldots\verb|}|
\end{quote}
\verb|\vadjust|$B$NCf3g8L$NFbB&$O(B, $B<+F0E*$K(B,
$B$=$l$,%"%8%c%9%H$5$l$k%j%9%H$N%G%#%l%/%7%g%s$G$"$k=D%G%#%l%/%7%g%s$K$J$k(B.

\verb|\insert|$B$N>l9g(B, $B%/%i%9$K$h$C$F%G%#%l%/%7%g%s$rJQ$($?$$>l9g$b$"$k(B.
$B$?$H$($PJ8=qA4BN$O=DAH$_$G(B, $B5SCm$O2#AH$_$9$k$H$7$h$&(B.
$B?^$r%/%i%9(B12$B$N%$%s%5!<%H$G(B, $B5SCm$r%/%i%9(B34$B$N%$%s%5!<%H$G=hM}$9$k$3$H$K$9$k(B.
\begin{quote}
	$B!J=D%G%#%l%/%7%g%s(B, v$B%b!<%I!K(B\\
	\ldots\verb|\insert12{\tate |\ldots\verb|}|\ldots\\
	\ldots\verb|\insert34{\yoko |\ldots\verb|}|\ldots\\
	\ldots\verb|\insert12{\tate |\ldots\verb|}|\ldots\\
	\ldots\verb|\insert34{\yoko |\ldots\verb|}|\ldots
\end{quote}
$B$3$N$h$&$K=q$1$P(B,
$B%\%C%/%9%l%8%9%?(B12$B$K$O=D%G%#%l%/%7%g%s$G?^$,=8$a$i$l(B,
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$B$J$*(B, $BF1$8%/%i%9$K0c$&%G%#%l%/%7%g%s$r:.$<$F;H$&$3$H$O$G$-$J$$(B.


\section{$B=DAH$_$K;HMQ$9$kJ8;z(B} \label{font}

\subsection{$B=DAH$_MQF|K\8l%U%)%s%H(B}

\TeX $B$O3F%U%)%s%H$K0l$D$:$DMQ0U$5$l$F$$$k(B
{\tt TFM}$B!J(B\kern0pt{\it\TeX\/} {\it F\/}ont {\it M\/}etric\kern0pt $B!K%U%!%$%k$r(B
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$B$=$3$G(B, $B2#AH$_;~$H=DAH$_;~$G$O(B,
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$B8+$($k$3$H$K$J$k(B.
$B$?$@$7(B, $BAH$_J}8~$K$h$k%U%)%s%H$N@Z$jBX$($O(B,
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\label{jfont}
$B2#AH$_$G$O(B, $B%Y!<%9%i%$%s$OJ8;z$N2<$NJ}$rDL$C$F$$$k(B.
$B=DAH$_$NOBJ8%U%)%s%H$O(B, $B%Y!<%9%i%$%s$,J8;z$NCf1{$rDL$k$3$H$K$7$?(B.
$B9T$NESCf$GJ8;z$NBg$-$5$rJQ$($?$H$-(B, $B$=$N$[$&$,<+A3$@$HH=CG$7$?$+$i$G$"$k(B.

\subsection{$B=DAH$_Cf$N2$J8(B}

$B=DAH$_$NItJ,$K2$J8$d?t<0$,=P$F$/$k$H(B,
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$B$H$3$m$,(B, \ref{jfont}$B$G@bL@$7$?$h$&$K(B,
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$B2#AH$_$G$b(B, $BOBJ8$H2$J8$N%Y!<%9%i%$%s$N0LCV$r:Y$+$/D4@a$7$J$$$H(B,
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\begin{quote} \begin{picture}(0,46)
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		\put(9,0){\vector(0,-1){14}} \put(9,0){\vector(0,1){0}}
		\put(9.5,-14){\makebox(0,14)[l]{$W$}}
		\put(0,2){\vector(1,0){7}} \put(0,2){\vector(-1,0){0.0}}
		\put(0,2.5){\makebox(7,0)[b]{$H$}}
		\put(0,2){\vector(-1,0){7}} \put(0,2){\vector(1,0){0.0}}
		\put(-7,2.5){\makebox(7,0)[b]{$D$}}
	\end{picture}}
	\put(4,19){\line(0,1){6}} \put(0,19){\line(0,1){5}}
	\put(0,23){\vector(1,0){4}} \put(0,23){\vector(-1,0){0}}
	\put(4.5,23){\makebox(0,0)[l]{\tt \char92 tbaselineshift}}
	\put(0,18){\begin{picture}(0,0)
		\thicklines
		\put(-4,-12){\framebox(12,12){$B1Q;z!J(B$90^\circ$ $B2sE>!K(B}}
		\put(0,0){\line(0,-1){12}}

		\thinlines
		\put(-4,1){\line(0,1){2}} \put(8,1){\line(0,1){2}}
		\put(9,0){\line(1,0){2}} \put(9,-12){\line(1,0){2}}

		\put(-4,2){\vector(1,0){4}} \put(-4,2){\vector(-1,0){0}}
		\put(-4,2.5){\makebox(4,0)[b]{$D$}}
		\put(0,2){\vector(1,0){8}} \put(0,2){\vector(-1,0){0}}
		\put(4,2.5){\makebox(4,0)[b]{$H$}}
		\put(10,0){\vector(0,-1){12}} \put(10,0){\vector(0,1){0}}
		\put(10.5,0){\makebox(0,-12)[l]{$W$}}
	\end{picture}}
	\put(4,0){\line(0,1){5}}

	\put(16,8){\line(1,0){5}}
	\put(22,8){\begin{picture}(0,0)
		\thicklines
		\put(0,-2){\framebox(14,14){$B2#AH$_$N4A;z(B}}
		\put(0,0){\line(1,0){14}}

		\thinlines
		\put(-3,-2){\line(1,0){2}} \put(-3,12){\line(1,0){2}}
		\put(0,13){\line(0,1){2}} \put(14,13){\line(0,1){2}}
		\put(-2,0){\vector(0,-1){2}} \put(-2,0){\vector(0,1){0}}
		\put(-2.5,-2){\makebox(0,2)[r]{$D$}}
		\put(-2,0){\vector(0,1){12}} \put(-2,0){\vector(0,-1){0}}
		\put(-2.5,0.0){\makebox(0.0,12.0)[r]{$H$}}
		\put(0,14){\vector(1,0){14}} \put(0,14){\vector(-1,0){0}}
		\put(0,14.5){\makebox(14,0.0)[b]{$W$}}
	\end{picture}}
	\put(37,8){\line(1,0){6}} \put(38,9){\line(1,0){5}}
	\put(39,9){\vector(0,-1){0}} \put(39,8){\vector(0,1){0}}
	\put(39,4){\line(0,1){7}}
	\put(39,3.5){\makebox(0,0)[t]{\tt \char92 ybaselineshift}}
	\put(44,9){\begin{picture}(0,0)
		\thicklines
		\put(0,-4){\framebox(12,12){$B1Q;z!J@5N)!K(B}}
		\put(0,0){\line(1,0){12}}

		\thinlines
		\put(-3,-4){\line(1,0){2}} \put(-3,8){\line(1,0){2}}
		\put(0,9){\line(0,1){2}} \put(12,9){\line(0,1){2}}

		\put(-2,0){\vector(0,-1){4}} \put(-2,0){\vector(0,1){0}}
		\put(-2.5,-4){\makebox(0,4)[r]{$D$}}
		\put(-2,0){\vector(0,1){8}} \put(-2,0){\vector(0,-1){0}}
		\put(-2.5,0){\makebox(0,8)[r]{$H$}}
		\put(0,10){\vector(1,0){12}} \put(0,10){\vector(-1,0){0}}
		\put(0,10.5){\makebox(12,0)[b]{$W$}}
	\end{picture}}
	\put(57,8){\line(1,0){5}}
\end{picture} \end{quote}


\section{$B=DAH$_Cf$N?t<0(B}

$B=DAH$_Cf$N?t<0$b(B, $B2$J8$HF1MM$K%7%U%H$5$;$J$1$l$P$J$i$J$$(B.
\TeX $B$N?t<0$K$O(B, $BJ,?t$N@~$N9b$5$J$I$r7hDj$9$k$?$a$N(B
axis$B!J<4!K$H$$$&35G0$,$"$k$N$G(B, $B$3$l$G%7%U%HNL$r7hDj$9$k$3$H$K$7$?(B.

$BLdBj$O<!$N$h$&$J>l9g$G$"$k(B.
\begin{quote}
	$B!J=D%G%#%l%/%7%g%s(B, h$B%b!<%I!K(B\\
	\ldots\verb|$ \hbox{$ |\angle{$B?t<0(B}\verb| $} $|\ldots
\end{quote}
$B$3$N>l9g(B, $B?t<0%b!<%I$,%M%9%F%#%s%0$5$l$k$3$H$K$J$k$N$G(B,
$BFbB&$N(B\angle{$B?t<0(B}$B$O(B2$B2s%7%U%H$5$l$k$3$H$K$J$C$F$7$^$&(B.
$B$3$l$rHr$1$k$?$a(B, \verb|$| $B$NFbB&$O(B,
$BIaDL$N=D%G%#%l%/%7%g%s$G$O$J$$=D?t<0%G%#%l%/%7%g%s$K0\9T$9$k$3$H$K$7$?(B.
$B=D?t<0%G%#%l%/%7%g%s$G$O(B
$BJ8;z$d%\%C%/%9$NJB$VJ}8~$O=D%G%#%l%/%7%g%s$HF1$8$G$"$k$,(B,
$B$=$NB>$NF0:n$O2#AH$_$HF1MM$G$"$k(B.
$B?t<0%G%#%l%/%7%g%sCf$G?t<0%b!<%I$K0\9T$7$F$b%7%U%H$O9T$o$:(B,
$B$^$?(B, $BF|K\8l$N%U%)%s%H$O2#AH$_%+%l%s%H%U%)%s%H$r;HMQ$9$k(B.
$B$D$^$j(B, $B?t<0$O2#AH$_$GAH$s$@$b$N$r;~7W2s$j$K(B90$BEY2sE>$7$F(B,
$B=DAH$_Cf$KA^F~$9$k7A$K$J$k(B.

$BJX59E*$K(B, $B2#AH$_$G$b?t<0%b!<%I$KF~$k$H2#?t<0%G%#%l%/%7%g%s$KF~$k$3$H$K$7$?(B.
$B8=:_$N%G%#%l%/%7%g%s$,DL>o$N%G%#%l%/%7%g%s$G$"$k$+(B,
$B?t<0%G%#%l%/%7%g%s$G$"$k$+$O(B, \verb|\ifmdir|$B$G%F%9%H$G$-$k(B.


\section{$BAHHG7k2L$N=PNO(B} \label{output}

\TeX $B$O(B\verb|\shipout|$B%W%j%_%F%$%V$G(B, $B%\%C%/%9$N:8>e6y$,;f$N:8>e6y$+$i(B,
$B1&$K(B $\verb|\hoffset|+1$B%$%s%A(B$,
$B2<$K(B $\verb|\voffset|+1$B%$%s%A(B$ $B$N0LCV$K$J$k$h$&$K(B,
{\tt DVI}$B!J(B\kern0pt{\it D\/}e{\it v\/}ice {\it I\/}ndependent\kern0pt $B!K(B
$B%U%!%$%k$K=PNO$9$k(B.
\pTeX $B$bF1MM$G$"$k(B.
\verb|\hoffset|, \verb|\voffset|$B$O(B, $B$[$+$N%W%j%_%F%#%VL>$H0c$C$F(B,
$B%G%#%l%/%7%g%s$K4X78$J$/(B, h, v$B$,K\Ev$K(Bholizontal, vertcal$B$r0UL#$7$F$$$k(B.

$B=>Mh$N(B\verb|DVI|$BL?Na$O(B, \.$B2#(B\.$BAH(B\.$B$_(B\.$B$N(B\.$B$H(B\.$B$-%U%!%$%k$,>.$5$/$J$k$h$&$K(B
$B9)IW$5$l$F$$$k(B.
$B$?$H$($P(B, ``$BJ8;z$N0u;z(B''$B$H(B``$BJ8;zI}$@$11&$X0\F0(B''$B$,(B,
1$B$D$NL?Na$G$G$-$k$h$&$K$J$C$F$$$k(B.
\pTeX $B$G$O(B, $B=DAH$_$N>l9g$G$b2#AH$_$HF1MM$K%U%!%$%k$,>.$5$/$J$k$h$&$K(B,
\verb|DVI|$B%U%)!<%^%C%H$r3HD%$7$?(B.

$B$?$@$7(B, $B$?$H$($P=>Mh$NJ8=q$r$3$N(B\TeX $B$G=hM}$7$?>l9g$J$I(B,
$B$=$NJ8=qFb$G=DAH$_$r;HMQ$7$F$$$J$$>l9g(B,
$B=>Mh$N$b$N$HF1$8%U%)!<%^%C%H$N(B{\tt DVI}$B$r=PNO$9$k(B.
$B$^$?(B, $B%W%j%"%s%V%k(B, $B%]%9%H%"%s%V%k$r%F%9%H$9$l$P(B,
$BJ8=qFb$7$?=DAH$_$r;HMQ$7$?2U=j$,B8:_$9$k$+$I$&$+$rCN$k$3$H$,$G$-$k$h$&$K$7$?(B.


\section{$B%$%s%W%j%a%s%H(B} \label{imple}

$B8=:_9=C[Cf$N%j%9%H$N%M%9%F%#%s%0>uBV$r<($9(B
$B%l%3!<%I!J(B\kern0pt {\it list\_state\_record\/}$B!K$K(B,
$B%G%#%l%/%7%g%s$rI=$9%U%#!<%k%I$rDI2C$7(B,
$B%H%C%W$N%G%#%l%/%7%g%s$r%^%/%m(B{\it direction\/}$B$G%"%/%;%9$G$-$k$h$&$K$7$?(B.
{\it direction\/}$B$NCM$O(B{\it dir\_yoko\/}$B$+(B, {\it dir\_tate\/}$B$+(B,
$-{\it dir\_yoko\/}$$B$+(B, $-{\it dir\_tate\/}$$B$G$"$k(B.
$-{\it dir\_yoko\/}$, $-{\it dir\_tate\/}$$B$O?t<0%G%#%l%/%7%g%s$r0UL#$9$k(B.

$B3F<o%N!<%I$K%G%#%l%/%7%g%s$rJ];}$9$k%U%#!<%k%I$r2C$($J$1$l$P$J$i$J$$(B.
$B%\%C%/%9$rI=$9(B{\it hlist\_node\/}, {\it vlist\_node\/}$B$G$O(B
$BBh(B1$B%o!<%I$N(B{\it sub\_type}$B%U%#!<%k%I$,L$;HMQ$@$C$?$N$G(B,
$B$3$l$r(B{\it box\_dir\/}$B$H$7$F;H$&$3$H$K$7$?(B.
\verb|\insert|$B$K$h$C$F@8@.$5$l$k(B
{\it ins\_node\/}$B$K$O6u$$$F$$$k%U%#!<%k%I$,$J$+$C$?$N$G(B,
$B%5%$%:$r(B1$B%o!<%IBg$-$/$7$FA4It$G(B6$B%o!<%I$K$7(B,
$B:G8e$N(B1$B%o!<%I$r(B{\it ins\_dir\/}$B$H$7$F;H$&$3$H$K$7$?(B.

\subsection{\it dir\_node}

$B=D%G%#%l%/%7%g%s$N%j%9%H$K2#%G%#%l%/%7%g%s$N%\%C%/%9$rDI2C$9$k$h$&$J>l9g(B,
$B4V$K(B{\it dir\_node\/}$B$rA^F~$7$F(B, $B%\%C%/%9$NBg$-$5$J$I$r@09g$5$;$k(B.
{\it dir\_node\/}$B$O(B, {\it hlist\_node\/}, {\it vlist\_node\/}$B$H(B
$BA4$/F1$89=B$$r;}$C$F$$$k(B.
$B%j%9%H$K$O$3$N(B{\it dir\_node\/}$B$,A^F~$5$l(B,
{\it dir\_node\/}$B$N(B{\it box\_dir\/}$B$K$O%j%9%H$N%G%#%l%/%7%g%s$,(B,
{\it width\/},{\it depth\/},{\it height\/}$B$K$O(B,
$B%j%9%H$N%G%#%l%/%7%g%s$G8+$?(B, $B%\%C%/%9$N(B$W$, $D$, $H$$B$NCM$,F~$C$F$$$k(B.
{\it dir\_node\/}$B$N(B{\it list\_ptr\/}$B$O<BBN$N%\%C%/%9$r;X$9%]%$%s%?$G$"$k(B.
$B<BBN$N%\%C%/%9!J(B{\it hlist\_node\/}, {\it vlist\_node\/}$B!K$N(B
{\it box\_dir\/}$B$K$O%\%C%/%9$N%G%#%l%/%7%g%s$,(B,
{\it width\/},{\it depth\/},{\it height\/}$B$K$O(B,
$B%\%C%/%9$N%G%#%l%/%7%g%s$G8+$?(B, $W$, $D$, $H$$B$NCM$,F~$C$F$$$k(B.

$B$?$H$($P(B
\begin{quote}
	$B!J=D%G%#%l%/%7%g%s!K(B\\
	{\gt \verb|$B><OB(B\hbox{\yoko 38}$BG/(B|}
\end{quote}
$B$O?^$N$h$&$J%j%9%H$r:n$k(B.
\begin{quote} \begin{picture}(40,25)(-4,-22)
	\thinlines
	\put(0,0){\begin{picture}(0,0)
		\put(-4,-3){\framebox(8,4){}}
		\put(0,0){\vector(1,0){6}}
		\put(0,0){\circle*{0.3}}
		\put(-4,-1){\line(1,0){8}}
		\put(-4,-3){\makebox(8,2)[c]{`$B><(B'}}
	\end{picture}}
	\put(10,0){\begin{picture}(0,0)
		\put(-4,-3){\framebox(8,4){}}
		\put(0,0){\vector(1,0){6}}
		\put(0,0){\circle*{0.3}}
		\put(-4,-1){\line(1,0){8}}
		\put(-4,-3){\makebox(8,2)[c]{`$BOB(B'}}
	\end{picture}}
	\put(20,0){\begin{picture}(0,0)
		\put(-4,-7){\framebox(8,8){}}
		\put(-4,-1){\makebox(4,2)[c]{\bf $B=D(B}}
		\put( 0,-1){\line(0,1){2}}
		\put( 2, 0){\vector(1,0){4}}
		\put(2,0){\circle*{0.3}}
		\put(-4,-1){\line(1,0){8}}
		\put(-4,-5){\makebox(8,4)[c]{\it dir\_node\/}}
		\put(-4,-5){\line(1,0){8}}
		\put( 0,-6){\circle*{0.3}}
		\put( 0,-6){\vector(0,-1){3}}
	\end{picture}}
	\put(30,0){\begin{picture}(0,0)
		\put(-4,-3){\framebox(8,4){}}
		\put(-4,-1){\line(4,1){8}}
		\put(-4,-1){\line(1,0){8}}
		\put(-4,-3){\makebox(8,2)[c]{`$BG/(B'}}
	\end{picture}}

	\put(20,-10){\begin{picture}(0,0)
		\put(-4,-7){\framebox(8,8){}}
		\put(-4,-1){\makebox(4,2)[c]{\bf $B2#(B}}
		\put( 0,-1){\line(0,1){2}}
		\put( 0,-1){\line(2,1){4}}
		\put(-4,-1){\line(1,0){8}}
		\put(-4,-5){\makebox(8,4)[c]{\it hlist\_node\/}}
		\put(-4,-5){\line(1,0){8}}
		\put( 0,-6){\circle*{0.3}}
		\put( 0,-6){\vector(0,-1){3}}
	\end{picture}}

	\put(20,-20){\begin{picture}(0,0)
		\put(-4,-3){\framebox(8,4){}}
		\put(0,0){\vector(1,0){6}}
		\put(0,0){\circle*{0.3}}
		\put(-4,-1){\line(1,0){8}}
		\put(-4,-3){\makebox(8,2)[c]{`3'}}
	\end{picture}}
	\put(30,-20){\begin{picture}(0,0)
		\put(-4,-3){\framebox(8,4){}}
		\put(-4,-1){\line(4,1){8}}
		\put(-4,-1){\line(1,0){8}}
		\put(-4,-3){\makebox(8,2)[c]{`8'}}
	\end{picture}}
\end{picture}\end{quote}
\begin{quote}\gt\begin{verbatim}
	\tmin $B><(B
	\tmin $BOB(B
	\dirboxT(5.00002+5.00002)x6.44444
	.\hboxY(6.44444+0.0)x10.00003
	..\tenrm 3
	..\tenrm 8
	\penalty 500(for \chrwidowpenalty)
	\glue(\kanjiskip) 0.0 plus 0.4 minus 0.4
	\tmin $BG/(B
\end{verbatim} \end{quote}

`\verb|\hbox{|'$B$HF~NO$5$l$k$H(B,
$B$=$l$^$G$N%j%9%H$d%b!<%I$d%G%#%l%/%7%g%s$,%;!<%V$5$l(B,
$B?7$?$J%j%9%H$d%b!<%I$d%G%#%l%/%7%g%s$,MQ0U$5$l$k(B.
\verb|\tate|$B$d(B\verb|\yoko|$B$O(B,
$B$=$N;~E@$G$N%j%9%H$,6u$G$"$l$P%G%#%l%/%7%g%s$rJQ99$9$k(B.
`\verb|\hbox{|'$B$KBP1~$9$k(B`\verb|}|'$B$,F~NO$5$l$k$H(B,
$B$^$:(B, \verb|\hbox{}|$B$NFbIt$N%G%#%l%/%7%g%s$HF1$8%G%#%l%/%7%g%s$N%\%C%/%9$,(B
$B:n$i$l$k(B.
$B$=$N%G%#%l%/%7%g%s$H(B\verb|\hbox{}|$B$N30B&$N%G%#%l%/%7%g%s$,0lCW$7$F$$$J$1$l$P(B,
{\it dir\_node}$B$r;H$C$F(B, $B%G%#%l%/%7%g%s$,@09g$5$;$i$l$k(B.

\subsection{\it disp\_node}

$BOBJ8Cf$N2$J8$d?t<0$N%Y!<%9%i%$%s$r%7%U%H$5$;$k$?$a$K(B,
$B?7<o$N%N!<%I(B{\it disp\_node\/}$B!J(B\kern0pt displacement node\kern0pt $B!K$r(B
$BF3F~$9$k$3$H$K$7$?(B.
$B$3$N%N!<%I$O(B, $B%j%s%/>pJs%o!<%I$N$[$+$K(B
{\it disp\_dimen\/}$B%U%#!<%k%I!J(B1$B%o!<%I!K$r;}$C$F$$$k(B.
{\it disp\_node\/}$B$O(Bh$B%j%9%HCf$K$N$_B8:_$7(B,
$B$3$N%N!<%I0J9_$N$9$Y$F$N%N!<%I$N%Y!<%9%i%$%s$r(B,
{\it disp\_dimen}$B$@$19TAw$jJ}8~$K%7%U%H$5$;$k(B.

$B$?$H$($P(B, $B=D%G%#%l%/%7%g%s$G(B\verb|\tbaselineshift|$B$NCM$,(B2$B%]%$%s%H$N$H$-(B,
\begin{quote}\gt
	\ldots\verb|$B$3$N(Bdisp$B%N!<%I(B|\ldots
\end{quote}
$B$N$h$&$KF~NO$9$k$H(B`\verb|disp|'$B$NA0$K(B2$B%]%$%s%H$N(B{\it disp\_node\/},
$B8e$K(B0$B%]%$%s%H$N(B{\it disp\_node\/}$B$,A^F~$5$l$k(B.
\begin{quote}\gt\begin{verbatim}
	\tmin $B$3(B
	\tmin $B$N(B
	\displace 2.0
	\glue(\xkanjiskip) 2.5 plus 1.0 minus 1.0
	\tenrm d
	\tenrm i
	\tenrm s
	\tenrm p
	\displace 0.0
	\glue(\xkanjiskip) 2.5 plus 1.0 minus 1.0
	\tmin $B%N(B
	\penalty 200(for kinsoku)
	\glue(\kanjiskip) 0.0 plus 0.4 minus 0.4
	\tmin $B!<(B
	\penalty 500(for \chrwidowpenalty)
	\glue(\kanjiskip) 0.0 plus 0.4 minus 0.4
	\tmin $B%I(B
\end{verbatim} \end{quote}
$BJ8;z!J(B\kern0pt {\it char\_node\/}$B!K(B,
$B%\%C%/%9!J(B\kern0pt {\it hlist\_node\/}, {\it vlist\_node\/}, {\it dir\_node\/}$B!K(B,
$B7S@~!J(B\kern0pt {\it rule\_node\/}$B!K0J30$N%N!<%I$K$O(B,
$H$$B$d(B$D$$B$,$J$$$N$G(B{\it disp\_node\/}$B$N1F6A$r<u$1$J$$(B.
$B$@$+$i(B
\begin{quote}\gt
	\ldots\verb|$B$3$N(Bdvi file$B%U%)!<%^%C%H(B|\ldots
\end{quote}
$B$N$h$&$KF~NO$5$l$?$H$-(B, \verb|device|$B$H(B\verb|independent|$B$N4V$N6uGr$NA08e$K(B
{\it disp\_node\/}$B$rF~$l$k$N$OL5BL$G$"$k(B.
\begin{quote}\gt\begin{verbatim}
	\tmin $B$3(B
	\tmin $B$N(B
	\displace 2.0
	\glue(\xkanjiskip) 2.5 plus 1.0 minus 1.0
	\tenrm d
	\tenrm v
	\tenrm i
	\displace 0.0
	\glue 3.33333 plus 1.66666 minus 1.11111
	\displace 2.0
	\tenrm ^^L (ligature fi)
	\tenrm l
	\tenrm e
	\displace 0.0
	\glue(\xkanjiskip) 2.5 plus 1.0 minus 1.0
	\tmin $B%U(B
	\penalty 150(for kinsoku)
	\glue 1.07391 minus 1.07391
	\tmin $B%)(B
\end{verbatim} \end{quote}
$B$=$3$G(B, $B%j%9%H$K(B{\it disp\_node\/}$B$r2C$($k$H$-(B,
$BL5BL$J(B{\it disp\_node\/}$B$r>C$9$h$&$K$7$?(B.
\begin{quote}\gt\begin{verbatim}
	.\tmin $B$3(B
	.\tmin $B$N(B
	.\displace 2.0
	.\glue(\xkanjiskip) 2.5 plus 1.0 minus 1.0
	.\tenrm d
	.\tenrm v
	.\tenrm i
	.\glue 3.33333 plus 1.66666 minus 1.11111
	.\tenrm ^^L (ligature fi)
	.\tenrm l
	.\tenrm e
	.\displace 0.0
	.\glue(\xkanjiskip) 2.5 plus 1.0 minus 1.0
	.\tmin $B%U(B
	.\penalty 150(for kinsoku)
	.\glue 1.07391 minus 1.07391
	.\tmin $B%)(B
\end{verbatim} \end{quote}

\subsection{$B=DAH$_MQ(B{\tt TFM}$B%U%!%$%k(B}

$B=DAH$_%U%)%s%HMQ3HD%(B{\tt TFM}$B%U%!%$%k$N%U%)!<%^%C%H$O(B, $B4pK\E*$K$O(B,
$B=>Mh$N(B{\tt JFM}$B%U%)!<%^%C%H(B\cite{jfm}$B$HJQ$o$i$J$$(B.
$B$?$@3F%U%#!<%k%I$N0UL#$,B?>/JQ2=$7$F$$$k(B.
$B:G=i$N%O!<%U%o!<%I!J(B\kern0pt {\it id}\kern0pt $B!K$G(B
{\tt JFM}$B%U%)!<%^%C%H$G$"$k$3$H$r<($9(B.
$\hbox{\it id} = 11$ $B$N>l9g$O2#AH$_MQ(B{\tt JFM},
$\hbox{\it id} = 9$ $B$N>l9g$O=DAH$_MQ(B{\tt JFM}$B$G$"$k(B.

{\it width}, {\it italic}, {\it kern}, {\it glue}$B$J$I(B
$B=>Mh$N2#AH$_(B{\tt JFM}$B%U%)!<%^%C%H$G2#J}8~$N0UL#$r;}$C$F$$$?%U%#!<%k%I$O(B,
$B=DAH$_(B{\tt JFM}$B$G$O=D!J;zAw$j!KJ}8~$N0UL#$r;}$D(B.
$B$?$H$($P(B{\it width}$B$O$=$NJ8;z$N=DJ}8~$NBg$-$5$G$"$k(B.

{\it height}, {\it depth}$B$J$I(B
$B=>Mh$N2#AH$_(B{\tt JFM}$B$G=DJ}8~$N0UL#$r;}$C$F$$$?%U%#!<%k%I$O(B,
$B=DAH$_(B{\tt JFM}$B$G$O2#!J9TAw$j!KJ}8~$N0UL#$r;}$D(B.
{\it height}$B$O$=$NJ8;z$N%Y!<%9%i%$%s$N1&B&$NBg$-$5(B,
{\it depth}$B$O$=$NJ8;z$N%Y!<%9%i%$%s$N:8B&$NBg$-$5$G$"$k(B.

\subsection{$B3HD%(B{\tt DVI}$B%U%)!<%^%C%H(B}

$B=>Mh$N(B\verb|DVI|$B$K$O?eJ?J}8~$X0\F0$9$kL?Na$H$7$F(B\verb|right|,
$B?bD>J}8~$X0\F0$9$kL?Na$H$7$F(B\verb|down|$B$H$$$&L>A0$,;HMQ$5$l$F$$$k(B.
h$B%\%C%/%9$r(B``$B?eJ?%\%C%/%9(B''$B$G$O$J$/(B``$B;zAw$jJ}8~$N%\%C%/%9(B''$B$HDj5A$7$?$h$&$K(B
\verb|right|$BL?Na$r;zAw$jJ}8~$X0\F0$9$kL?Na(B,
\verb|down|$BL?Na$r9TAw$jJ}8~$X0\F0$9$kL?Na$HDj5A$7$?(B.
$B;zAw$j(B, $B9TAw$j$NJ}8~$O(B, $BAH$_J}8~$K$h$C$FJQ$o$k$N$G(B,
\verb|DVI|$B%j!<%@$K$b%G%#%l%/%7%g%s$r@_$1$F(B,
$B?7$7$$L?Na(B\verb|dir|$B$K$h$C$F%G%#%l%/%7%g%s$r@Z$j49$($k$3$H$K$7$?(B.
\verb|push|, \verb|pop|$B$G(B, $(h,v,w,x,y,z)$$B$NB>$K(B,
$B%G%#%l%/%7%g%s(B$d$$B$b(Bpush, pop$B$9$k(B.

\verb|DVI|$B$NL?Na$O:G=i$N(B1$B%P%$%H$G<1JL$G$-$k$h$&$K$J$C$F$$$k(B.
$B$9$G$K(B0--249$B$,;HMQ$5$l$F$$$k(B\footnote{
	\TeX $B$r(B, $B1Q8l$J$I$N:8$+$i1&$X=q$/8@8l$H(B,
	$B%"%i%S%"8l$d%X%V%i%$8l$N$h$&$K1&$+$i:8$X=q$/8@8l$r(B
	$B:.?"$G$-$k$h$&$K2~B$$7$?;vNc(B\cite{arabic}$B$G$O(B,
	$B$=$N%$%s%W%j%a%s%H$NJ}K!$H$7$F(B\verb|DVI|$BL?Na$r3HD%$7$F$*$j(B,
	250, 251$B$r;HMQ$7$F$$$k(B.
}$B$N$G?7$7$$L?Na$O(B255$B$r;H$&$3$H$K$7$?(B.
\verb|dir|$B!J(B\kern0pt 255\kern0pt $B!KL?Na$O(B1$B%P%$%H$N0z?t(B$d$$B$r(B1$B$D<h$k(B.
\begin{itemize}
\item $d=0$ $\cdots$ $B2#AH$_(B
\item $d=1$ $\cdots$ $B=DAH$_(B
\end{itemize}

$B2#%G%#%l%/%7%g%s$N>l9g$O=>Mh$N(B\verb|DVI|$B$H%3%s%Q%A%V%k$G$"$k$,(B,
$B=D%G%#%l%/%7%g%s$N>l9g$O=>Mh$N(B\verb|DVI|$B$G2#J}8~$K0\F0$9$kL?Na(B
\begin{quote} \begin{verbatim}
	set_char_* set? set_rule right? w? x?
\end{verbatim} \end{quote}
$B$O=DJ}8~!J;zAw$jJ}8~!K$K0\F0$9$kL?Na$H$J$j(B,
$B=>Mh$N(B\verb|DVI|$B$G=DJ}8~$K0\F0$9$kL?Na(B
\begin{quote} \begin{verbatim}
	down? y? z?
\end{verbatim} \end{quote}
$B$O2#J}8~!J9TAw$jJ}8~!K$K0\F0$9$kL?Na$H$J$k(B.

$BJ8;z$O(B, $B%Y!<%9%i%$%s$NJ}8~$,;zAw$j$NJ}8~$H0lCW$9$k$h$&$K(B,
$BI,MW$J$i2sE>$7$F(B, $B0u;z$5$l$J$1$l$P$J$i$J$$(B.
$B7S@~$NL?Na$b%G%#%l%/%7%g%s$K$h$C$FJ}8~$,JQ$o$k(B.
$B=>Mh$N(B\verb|set_rule|, \verb|put_rule|$B$G$O(B,
$B:G=i$N0z?t$,9b$5(B, $B<!$N0z?t$,I}$rI=$7$F$$$?(B.
$B3HD%(B\verb|DVI|$B$G$O(B, $B:G=i$N0z?t$,7S@~$N9TAw$jJ}8~$NH?BPB&$NBg$-$5(B,
$B<!$N0z?t$,;zAw$jJ}8~$NBg$-$5$rI=$7$F$$$k(B.
\verb|set_rule|$B$G$O(B2$BHVL\$N0z?t$G;XDj$7$F$"$kD9$5$@$1(B
$B;zAw$jJ}8~$K;2>HE@$r0\F0$5$;$k(B.

$B3F%Z!<%8$N@hF,$G$O(B, {\tt DVI}$B%j!<%@$O2#%G%#%l%/%7%g%s$G$"$j(B,
$B3HD%(B\verb|DVI|$BBP1~$N%W%j%s%?%I%i%$%P$G(B, $B=>Mh$N(B\verb|DVI|$B$b%W%j%s%H%"%&%H$G$-(B,
$B3HD%L?Na!J(B\kern0pt \verb|dir|\kern0pt $B!K$r;H$C$F$$$J$$(B\verb|DVI|$B%U%!%$%k$O(B,
$B=>Mh$N%W%j%s%?%I%i%$%P$G%W%j%s%H%"%&%H$G$-$k(B.

\verb|DVI|$B%U%!%$%k$K$O(B, $B%U%!%$%k$N@hF,!J(B\kern0pt preamble\kern0pt $B!K$H(B
$BKvHx!J(B\kern0pt postamble\kern0pt $B!K$K(B\verb|DVI|$B$N%P!<%8%g%s$rI=$9(B
{\it id\_byte}$B$,=q$-9~$^$l$F$$$k(B.
$B=>Mh$N(B\verb|DVI|$B$G$O$I$A$i$N(B{\it id\_byte}$B$b(B2$B$G$"$k(B.
$B3HD%L?Na$r;H$C$F$$$k(B\verb|DVI|$B%U%!%$%k$G$O(B, postamble$B$N(B{\it id\_byte}$B$r(B3$B$K$7$F(B,
$B3HD%%W%j%s%?%I%i%$%P$G%W%j%s%H%"%&%H$7$J$1$l$P$J$i$J$$$3$H$rI=$9(B.


\section{$BF|K\8l(B\TeX $B$H$N8_49@-(B}

\pTeX $B$O(B, $B5!G=LL$G$O=>Mh$NF|K\8l(B\TeX $B$H$N40A4$J8_49@-$rJ]$C$F$$$k(B.

$B@-G=LL$G$N0c$$$rHf3S$9$k$?$a$K(B
SONY NEWS 1460$B>e$NF|K\8l(B\TeX $B$H(B\pTeX $B$GK\O@J8$rAHHG$7(B,
csh$B$N(Btime$B%3%^%s%I$G(BCPU$B;~4V$rHf3S$7$F$_$?(B.
$B$J$*$3$N%F%9%H$G$O(B, $B$"$i$+$8$a(Baux$B%U%!%$%k$r:n@.$7$F$*$-(B,
{\tt virtex}$B$K(B\LaTeX $B$N%U%)!<%^%C%H%U%!%$%k$rFI$_9~$^$;$k7A$G5/F0$7$F7WB,$7$?(B.
\begin{itemize}
\item $BF|K\8l(B\TeX $B$N>l9g(B:\\
	\verb|24.7u 0.3s 0:25 99% 44+123k 0+16io 0pf+0w|

\item \pTeX $B$N>l9g(B:\\
	\verb|25.0u 0.3s 0:25 99% 46+121k 0+16io 0pf+0w|
\end{itemize}

$B$d$O$jB?>/Ii2Y$O=E$/$J$C$F$$$k$h$&$@$,(B,
$BLs(B1 \%$B$J$N$G$[$H$s$IJQ$C$F$$$J$$$H8@$C$F$$$$$H;W$&(B.
$B$3$l$O(B, \pTeX $B$rF|K\8l(B\TeX $B$NCV$-49$($H$7$F;HMQ$7$F$b(B
$B;Y>c$O$J$$$H$$$&$3$H$r0UL#$7$F$$$k(B.


\section{$B$*$o$j$K(B}

$B:#2s9T$C$?(B\TeX $B$N2~B$$O(B, $BAjEvBg5,LN$J$b$N$G$"$k(B.
$B%"%9%-!<HGF|K\8l(B\TeX $B$NCJ3,$G4{$K(B{\tt trip test}$B$r%Q%9$7$J$/$J$C$F$*$j(B,
$B$3$l$K$5$i$K2~B$$r2C$($?$N$G(B,
`$B$b$O$d$3$l$O(B\TeX $B$G$O$J$$(B'$B$H$$$&0U8+$b$"$k$+$bCN$l$J$$(B.
$B;d$O(B, \TeX $B$N:,K\$O0J2<$N(B3$B9`L\$G$"$m$&$H9M$($F$$$k(B.
\begin{itemize}
\item $B%\%C%/%9$H%0%k!<(B
\item $B%i%$%s%V%l!<%/(B, $B%Z!<%8%V%l!<%/(B
\item $B%^%/%m(B
\end{itemize}
$B$3$N5!9=$OC1=c$G$"$k$K$b$+$+$o$i$:Hs>o$K6/NO$G(B,
$BAHHG$N=tLdBj$r$[$\2r7h$9$k$3$H$,$G$-$k(B.
$B$3$N4pK\$rF'$_30$5$J$1$l$P(B, \TeX $B$H8F$s$G$$$$$N$G$O$J$$$@$m$&$+(B.

$B$b$H$b$H(B, \TeX $B%7%9%F%`$O%/%L!<%965<x$,EAE}E*$JAHHG$K$D$$$FD4::$7(B,
$BF1Ey0J>e$N%/%*%j%F%#$rF@$k$3$H$rL\I8$K:n$i$l$?%7%9%F%`$G$"$k(B.
\pTeX $B$b(B, $B=>Mh$NF|K\8l$NAHHG$K$D$$$F==J,D4::$7(B,
$B@h?M$N9T$C$F$-$?H~$7$$AHHG$N$?$a$N9)IW$r(B,
$B$G$-$k8B$j<h$j9~$s$G$$$-$?$$$H9M$($F$$$k(B.
$B$=$l$r$"$kDxEY8zN($h$/9T$&$?$a$K$O(B,
$B$d$O$j(B, \TeX $B$NFbIt$KJQ99$r2C$($kI,MW$,$"$k(B.

$B:#8e$N(B\pTeX $B$N4D6-$N@0Hw(B, $B5!G=3HD%$H$7$F0J2<$N$b$N$r9M$($F$$$k(B.
\begin{description}
\item[$B%^%/%m$N=<<B(B]\ \\
	$B=DAH$_$KI,MW$J%^%/%m$r@v$$=P$7(B, $B=<<B$5$;$kI,MW$,$"$k(B.

\item[$BLsJ*$N%A%e!<%K%s%0(B]\ \\
	$B8=:_$N(B{\tt TFM}$B$G$O(B, $BLsJ*!J5-9fN`!K$N07$$$K$D$$$F(B
	$B%A%e!<%K%s%0$NB-$j$J$$ItJ,$,$"$k(B.

	{\tt TFM}$B$N%A%e!<%K%s%0$GBP1~$7$-$l$J$$>l9g$O(B,
	\TeX $BK\BN$N%9%Z!<%7%s%0%"%k%4%j%:%`$KJQ99$r(B
	$B2C$($J$1$l$P$J$i$J$$$+$b$7$l$J$$(B.

\item[$B4A;z!&%+%JJL%U%)%s%H(B]\ \\
	$B<L?"$K$O%+%J=qBN$H8@$C$F(B, $B4A;z$,4^$^$l$F$$$J$$=qBN$,$"$k(B.
	$B$3$l$H4A;z$N=qBN!JL@D+(B, $B%4%7%C%/$J$I!K$H$rAH$_9g$o$;$FJ8>O$rAH$`(B.
	$B%+%J$N=qBN$rJQ$($?$@$1$G$b$+$J$jJ70O5$$,JQ$o$k$b$N$G$"$k(B.

	$B$3$l$r(B\TeX $B$G<B8=$9$k$K$O(B, $B%+%J$N%+%l%s%H%U%)%s%H$r@_$1$F(B,
	$B%3!<%I$K$h$C$F4A;z%U%)%s%H$H%+%J%U%)%s%H$r;H$$J,$1$k$3$H$K$J$k$@$m$&(B.

\item[$B%k%S(B]\ \\
	$B$d$O$jF|K\8l$N=q@R$rAHHG$9$k$?$a$K$O(B, $B%k%S$rHr$1$k$o$1$K$O$$$+$J$$(B.

	$B%k%S$N?6$C$F$"$k$3$H$P$NESCf$G%i%$%s%V%l!<%/$,5/$3$k>l9g$,$"$k$N$G(B,
	$B%i%$%s%V%l!<%/=hM}$K<j$r2C$($J$1$l$P$J$i$J$$(B.
	$B=DAH$_3HD%$KI$E($9$kBg2~B$$K$J$k$H;W$o$l$k(B.
\end{description}

\subsection*{$B<U<-(B}

$BK\8&5f$N5!2q$rM?$($F$/$@$5$C$?(B
$B!J3t!K(B\kern-3pt $B%"%9%-!<(B $BEE;RJT=88&5fE}3mIt(B $B0f6\>;?.(B $BE}3mItD9(B,
$BF1(B $B5;=QE}3mIt(B $B;01:2m9'(B $BE}3mItD9(B,
$B$J$i$S$K(B, \TeX $B%7%9%F%`$K$D$$$F5.=E$J$40U8+$r$$$?$@$$$?(B $BF1(B $B5;=QIt(B $BBgLn=S<#(B $B<!D9(B
$B$K46<U$7$^$9(B.

\begin{thebibliography}{9}
\bibitem{texbook} Knuth, D. E. : {\em The \TeX book}, Addison-Wesley (1986)\\
	$B!N:XF#?.CK(B $B4F=$(B, $B:mC+9%51(B $BK]Lu(B : \TeX $B%V%C%/(B, $B%"%9%-!<(B(1989)$B!O(B
\bibitem{texweb} Knuth, D. E. : {\em \TeX : the program}, Addison-Wesley (1986)
\bibitem{jtex} $BARBtNI0l(B : \TeX $B%7%9%F%`$NF|K\8l2=(B,
		$BF|K\8l(B\TeX $BG[I[%F!<%W(B, {\tt ./doc/jtex.tex} (1987)
\bibitem{jfm} $BARBtNI0l(B : JFM file format,
		$BF|K\8l(B\TeX $BG[I[%F!<%W(B, {\tt ./doc/jfm.tex} (1987)
\bibitem{arabic} Knuth, D. E. and MacKay, P. :
	Mixing right-to-left texts with left-to-right texts,
		{\em TUGboat Volume~8 No.~1}, pp.~14--25 (1987)
\end{thebibliography}

\end{document}