\theoremstyle{definition}
%<en>\newtheorem{defn}{Definition}
%<ja>\newtheorem{defn}{定義}
+\DeclareMathOperator\nint{nint}
%%%%%%%% logo
\usepackage{metalogo}
%<*en>
\item[\texttt{jfm-ujis.lua}] A standard horizontal JFM in \LuaTeX-ja. This JFM is
based on \verb+upnmlminr-h.tfm+, a metric for UTF/OTF package that
- is used in \upTeX. When you use the \Pkg{luatexja-otf} package, you should use this JFM.
+ is used in \upTeX. When you are going to use the \Pkg{luatexja-otf} package, you should use this JFM.
%</en>
%<*ja>
\item[\texttt{jfm-ujis.lua}] \LuaTeX-jaの標準JFMである．このJFMは\upTeX で
\footnote{プロポーショナル組の状況でルビをつけたい，などという状況では\texttt{jfm-propw.lua}が有用かもしれない．}．
%</ja>
%<*en>
-Furthermore, \LuaTeX-ja also ship two JFMs, namely \texttt{jfm-prop.lua}~and~\emph{\texttt{jfm-propw.lua}},
+Furthermore, \LuaTeX-ja also ship two JFMs, namely \texttt{jfm-prop.lua}~and~\texttt{jfm-propw.lua},
for ``proportional typesetting''.
Both JFMs don't have any character width information, nor glues/kerns information.
\texttt{jfm-prop.lua} also also not have character height and depth information, while \texttt{jfm-propw.lua} has them.
%</ja>
%<*ja>
+\newpage
\paragraph{\texttt{extend}と\texttt{slant}}
OpenType機能と見かけ上同じような形式で指定できるものに，
\begin{description}
\item[\texttt{slant=}<slant>] slant the font.
\end{cslist}
Note that \LuaTeX-ja doesn't adjust JFMs by these \texttt{extend} and \texttt{slant}
-settings; you have to write new JFMs on purpose.
+settings; one have to write new JFMs on purpose.
For example, the following example uses the standard JFM \texttt{jfm-ujis.lua}, hence
letter-spacing and the width of italic correction are not correct:
%</en>
\end{LTXexample}
%<*ja>
-\paragraph{\texttt{ltjksp} 指定}
+\paragraph{\texttt{ltjksp}指定}
\label{pg:ltjksp}
\LuaTeX-ja標準では，
-JFM中における \texttt{kanjiskip\_natural}, \texttt{kanjiskip\_stretch},\
+JFM中における\texttt{kanjiskip\_natural}, \texttt{kanjiskip\_stretch},\
\texttt{kanjiskip\_shrink}キー（\pageref{pg:ksp_nat}ページ）の使用によって，
「JFM由来のグルーの他に，\Param{kanjiskip}の自然長/伸び量/縮み量の一部が
同じ場所に挿入される」という状況が起こりうる．
この機能を無効化し，バージョン20150922.0以前と同じような組版を得るためには
-他のOpenType機能と同じように\ \texttt{-ltjksp}\ 指定を行えば良い．
-\begin{LTXexample}[width=16\zw]
-\leavevmode
-\ltjsetparameter{kanjiskip=0pt plus 3\zw}
-\vrule\hbox to 15\zw{あ「い」う，えお}\vrule\\
-\jfont\G=HaranoAjiMincho-Regular%
- :jfm=ujis;-ltjksp at \zw
-\G\leavevmode%
-\vrule\hbox to 15\zw{あ「い」う，えお}\vrule
-\end{LTXexample}
+他のOpenType機能と同じように\texttt{-ltjksp}指定を行えば良い（\autoref{fig:ltjksp}参照）．
なお，
\begin{lstlisting}
\jfont\G=HaranoAjiMincho-Regular:jfm=ujis;-ltjksp;+ltjksp at \zw
\end{lstlisting}
-のように \texttt{+ltjksp} 指定を行った場合は，\texttt{kanjiskip\_natural} など
-3キーは再び有効化される．\texttt{-ltjksp}, \texttt{+ltjksp} を複数回指定した場合は，
+のように\texttt{+ltjksp}指定を行った場合は，\texttt{kanjiskip\_natural}など
+3キーは再び有効化される．\texttt{-ltjksp}, \texttt{+ltjksp}を複数回指定した場合は，
最後に指定したものが有効となる．
%</ja>
%<*en>
\texttt{kanjiskip\_shrink} keys (Page~\pageref{pg:ksp_nat}) makes tha
\LuaTeX-ja inserts not only a glue which is specified by a JFM, and also
the natural width/stretch part/shrink part of \Param{kanjiskip}.
-
-This functionality is disabled by \texttt{-ltjksp} specification.
+This functionality is disabled by \texttt{-ltjksp} specification,
+as shown in~\autoref{fig:ltjksp}.
+%</en>
+\begin{figure}
\begin{LTXexample}[width=16\zw]
\leavevmode
\ltjsetparameter{kanjiskip=0pt plus 3\zw}
\G\leavevmode%
\vrule\hbox to 15\zw{あ「い」う，えお}\vrule
\end{LTXexample}
-%</en>
+\caption{\texttt{ltjksp}}
+\label{fig:ltjksp}
+\end{figure}
\begin{itemize}
\item OpenType Feature~\texttt{vrt2}%
\footnote{If the font does not define \texttt{vrt2} feature,
- use \texttt{vert} instead.} is automatically activated,
+ \texttt{vert} is used instead.} is automatically activated,
unless \texttt{vert}~and//or~\texttt{vrt2} are explicitly activated
or deactivated (as the second line in the example below).
\begin{lstlisting}
By default, it substitutes ideographic comma/period for fullwidth comma/period,
and double prime quotation marks for double quotation marks
(See~\autoref{fig:jpotf}).
+ One can customize substitutions by lua~function \verb+luatexja.jfont.register_vert_replace+\ %
+ (see Japanese version of this manual).
\end{itemize}
%</en>
%<*ja>
「実際のグリフの幅に合わせて文字幅を整数倍する」際のしきい値を指定する．
より正確に述べると，次のようになる．このフィールドに正の数$r$が指定されていたとし，
文字クラス0で指定されている文字幅が$w$，文字クラス0に属する文字のグリフの幅が$w'$であったとする．
-$n$を$w/w'$に「もっとも近い整数」($\lfloor w/w'+0.5\rfloor$)としたとき，
-もし$|w/w'-n|\char`<r$であれば，JFMで文字幅$nw$が指定されたものとして扱う．
+$n=\nint(w/w')$とした
+\footnote{ここで，$\nint(a)=\lfloor a+0.5\rfloor$は$a$に「もっとも近い整数」を表す．}
+とき，もし$w'>w$かつ$|w/w'-n|\char`<r$であれば，JFMで文字幅$nw$が指定されたものとして扱う．
この機能は，ほとんど源ノ明朝・源ノ角ゴシックにおける2倍角・3倍角ダッシュの合字のために実装されたと
言ってもよい．これらのグリフは\LuaTeX 内部ではUnicodeの私用領域に割り当てられるので，
%<ja>\paragraph{仮想的な文字}
%<en>\paragraph{Imaginary characters}
%<*en>
-As described before, you can specify several ``imaginary characters'' in
+As described before, one can specify several ``imaginary characters'' in
\texttt{chars} field. The most of these characters are regarded as the
characters of class 0 in \pTeX.
As a result, \LuaTeX-ja can control typesetting finer than \pTeX.
\autoref{tab-math} shows counterparts to \TeX's primitives for math
font families. There is no relation between the value of
\cs{fam} and that of \cs{jfam}; with appropriate settings,
-you can set both \cs{fam} and \cs{jfam} to the same value.
+one can set both \cs{fam} and \cs{jfam} to the same value.
Here <jfont\_cs> in the argument of \Param{jatextfont} etc.\ is
a control sequence which is defined by \cs{jfont}, i.e.,
a \emph{horizontal} Japanese font.
%<en>\item[\texttt{luatexja.load\_jfm} callback]
%<ja>\item[\texttt{luatexja.load\_jfm}コールバック]
%<*en>
-With this callback you can overwrite JFMs.
+With this callback, one can overwrite JFMs.
This callback is called when a new JFM is loaded.
%</en>
%<*ja>
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