-\item[\textsf{kcatcode}\,=\{<chr\_code>,<value>\}]
-\item[\textsf{prebreakpenalty}\,=\{<chr\_code>,<penalty>\}]
-\item[\textsf{postbreakpenalty}\,=\{<chr\_code>,<penalty>\}]
-\item[\textsf{jatextfont}\,=\{<jfam>,<jfont\_cs>\}]
-\item[\textsf{jascriptfont}\,=\{<jfam>,<jfont\_cs>\}]
-\item[\textsf{jascriptscriptfont}\,=\{<jfam>,<jfont\_cs>\}]
-\item[\textsf{yjabaselineshift}\,=<dimen>$^\ast$]
-\item[\textsf{yalbaselineshift}\,=<dimen>$^\ast$]
-\item[\textsf{jaxspmode}\,=\{<chr\_code>,<mode>\}]
-\item[\textsf{alxspmode}\,=\{<chr\_code>,<mode>\}]
-\item[\textsf{autospacing}\,=<bool>$^\ast$]
-\item[\textsf{autoxspacing}\,=<bool>$^\ast$]
-\item[\textsf{kanjiskip}\,=<skip>]
-\item[\textsf{xkanjiskip}\,=<skip>]
-\item[\textsf{jcharwidowpenalty}\,=<penalty>]
+\item[\textsf{jcharwidowpenalty}\,=<penalty>] [\verb+\jcharwidowpenalty+]
+
+Penalty value for supressing orphans. This penalty is inserted just
+ after the last \textbf{JAchar} which is not regarded as a
+ (Japanese) punctuation mark.
+
+\item[\textsf{kcatcode}\,=\{<chr\_code>,<natural number>\}]\
+
+An additional attributes having each character whose character code is <chr\_code>.
+At the present version, the lowermost bit of <natural number> indicates
+ whether the character is considered as a punctuation mark
+ (see the description of \textsf{jcharwidowpenalty} above).
+
+
+\item[\textsf{prebreakpenalty}\,=\{<chr\_code>,<penalty>\}] [\verb+\prebreakpenalty+]
+\item[\textsf{postbreakpenalty}\,=\{<chr\_code>,<penalty>\}] [\verb+\postbreakpenalty+]
+\item[\textsf{jatextfont}\,=\{<jfam>,<jfont\_cs>\}] [\verb+\textfont+ in \TeX]
+\item[\textsf{jascriptfont}\,=\{<jfam>,<jfont\_cs>\}] [\verb+\scriptfont+ in \TeX]
+\item[\textsf{jascriptscriptfont}\,=\{<jfam>,<jfont\_cs>\}] [\verb+\scriptscriptfont+ in \TeX]
+\item[\textsf{yjabaselineshift}\,=<dimen>$^\ast$]\
+\item[\textsf{yalbaselineshift}\,=<dimen>$^\ast$] [\verb+\ybaselineshift+]
+
+\item[\textsf{jaxspmode}\,=\{<chr\_code>,<mode>\}] [\verb+\inhibitxspcode+]
+
+Setting whether inserting \textsf{xkanjiskip} is allowed before/after a \textbf{JAchar} whose character code is <chr\_code>.
+The followings are allowed for <mode>:
+\begin{description}
+\item[0, \texttt{inhibit}] Insertion of \textsf{xkanjiskip} is inhibited before the charater, nor after the charater.
+\item[2, \texttt{preonly}] Insertion of \textsf{xkanjiskip} is allowed before the charater, but not after.
+\item[1, \texttt{postonly}] Insertion of \textsf{xkanjiskip} is allowed after the charater, but not before.
+\item[3, \texttt{allow}] Insertion of \textsf{xkanjiskip} is allowed before the charater and after the charater.
+This is the default value.
+\end{description}
+
+\item[\textsf{alxspmode}\,=\{<chr\_code>,<mode>\}] [\verb+\xspcode+]
+
+Setting whether inserting \textsf{xkanjiskip} is allowed before/after a \textbf{ALchar} whose character code is <chr\_code>.
+The followings are allowed for <mode>:
+\begin{description}
+\item[0, \texttt{inhibit}] Insertion of \textsf{xkanjiskip} is inhibited before the charater, nor after the charater.
+\item[1 \texttt{preonly}] Insertion of \textsf{xkanjiskip} is allowed before the charater, but not after.
+\item[2 \texttt{postonly}] Insertion of \textsf{xkanjiskip} is allowed after the charater, but not before.
+\item[3, \texttt{allow}] Insertion of \textsf{xkanjiskip} is allowed before the charater and after the charater.
+This is the default value.
+\end{description}
+Note that parameters \textsf{jaxspmode} and \textsf{alxspmode} use a common table.
+
+\item[\textsf{autospacing}\,=<bool>$^\ast$] [\verb+\autospacing+]
+\item[\textsf{autoxspacing}\,=<bool>$^\ast$] [\verb+\autoxspacing+]
+\item[\textsf{kanjiskip}\,=<skip>] [\verb+\kanjiskip+]
+\item[\textsf{xkanjiskip}\,=<skip>] [\verb+\xkanjiskip+]