\end{figure}
\item[kern={\{[$j$]=<kern>, [$j'$]=\{<kern>, [ratio=<ratio>]\}, ...\}}]
-
+\nopagebreak
\item[glue={\{[$j$]=\{<width>, <stretch>, <shrink>, [ratio=<ratio>, ...]\}, ...\}}]\leavevmode
%<*ja>
%<*en>
\
-Specifies the width of kern or glue which will be inserted
+Specifies the amount of kern or glue which will be inserted
between characters in character class~$i$ and those in character class~$j$.
<ratio> specifies how much the glue is originated in the ``right'' character.
度を$-2$から$+2$の間の整数で指定する.大きい値ほど「伸びやすく,縮みやすい」
ことを意味する.省略時の値
は0であり,範囲外の値が指定されたときの動作は未定義である.
-\item[ksp\_natural=<bool>]
-\item[ksp\_stretch=<bool>]
-\item[ksp\_shrink=<bool>]
+\item[ksp\_natural=<bool>\textrm{, }%
+ ksp\_stretch=<bool>\textrm{, }ksp\_shrink=<bool>]\leavevmode
+
+JFMによって本来挿入されるグルーの他に
+\Param{kanjiskip}分の空白を自然長(\texttt{ksp\_natural}),伸び量(\texttt{ksp\_stretch}),
+縮み量(\texttt{ksp\_shrink})ごとに挿入する\footnote{本来\Param{xkanjiskip}が挿入される場所においては
+ \Param{xkanjiskip}分の空白を自然長・伸び量・縮み量ごとに.追加できる.}%
+ための指定である.
+
+例えば,\LuaTeX-jaの横組標準JFMの \texttt{jfm-ujis.lua} では,
+\begin{itemize}
+ \item 通常の文字「あ」と開き括弧類の間に入るグルーは,自然長・縮み量半角,伸び量0のグルー
+となっているが,\texttt{ksp\_stretch=true} のおかげで,さらに\Param{kanjiskip}の伸び量だけ
+伸びることが許される.
+ \item 同様に,閉じ括弧類(全角コンマ「,」も含む)と通常の文字「う」「え」の間にも
+自然長・縮み量半角,伸び量0のグルー
+となっているが,\texttt{ksp\_stretch=true} のおかげで,さらに\Param{kanjiskip}の伸び量だけ
+伸びることが許される.
+\end{itemize}
+となっている.従って,以下のような組版結果を得る.
+
+\medskip
+\begin{LTXexample}[width=16\zw]
+\leavevmode
+\ltjsetparameter{kanjiskip=0pt plus 3\zw}
+\vrule\hbox to 15\zw{あ「い」う,えお}\vrule
+\end{LTXexample}
+
\end{cslist}
%</ja>
%<*en>
used only in line adjustment with priority by \Pkg{luatexja-adjust}
(see Subsection~\ref{ssec-adj}). Higher value means the glue is easy to stretch,
and is also easy to shrink.
-\item[ksp\_natural=<bool>]
-\item[ksp\_stretch=<bool>]
-\item[ksp\_shrink=<bool>]
+\item[ksp\_natural=<bool>\textrm{, }%
+ ksp\_stretch=<bool>\textrm{, }ksp\_shrink=<bool>]\leavevmode
+
+These keys specifies whether the natural width of \Param{kanjiskip}
+(the stretch/shrink part, respectively) will be inserted in addition to the original
+JFM glue.
+
+As an example, in \texttt{jfm-ujis.lua}, the standard JFM in horizontal writing, we have
+\begin{itemize}
+ \item Between an ordinal letter ``あ'' and an ideographic opening bracket, we have
+a glue whose natural part and shrink part are both half-width, while its stretch part is
+ zero. However, because of \texttt{ksp\_stretch=true}, this glue can be stretched
+ as much as \Param{kanjiskip}.
+ \item Between an ideographic closeing brackets (the ideographic comma ``,''
+ is included) and an ordinal letter, we have the same glue. Again, because of
+\texttt{ksp\_stretch=true}, this glue can be stretched as much as \Param{kanjiskip}.
+\end{itemize}
+Hence we have the following result:
+
+\medskip
+\begin{LTXexample}[width=16\zw]
+\leavevmode
+\ltjsetparameter{kanjiskip=0pt plus 3\zw}
+\vrule\hbox to 15\zw{あ「い」う,えお}\vrule
+\end{LTXexample}
+
\end{cslist}
%</en>