\author{\e$B<i2,\e(B \e$BCNI'\e(B}
\date{}
+\newenvironment{feature}[1]
+{\vspace{0.3em}\noindent{\textbf{\e$B5!G=\e(B #1}}\vspace{-0.5em}\begin{quote}}
+{\end{quote}}
+
\newenvironment{function}[2]
{\vspace{0.3em}\noindent{\textbf{\e$B4X?t\e(B #1} (\textit{#2})}\vspace{-0.5em}\begin{quote}}
{\end{quote}}
\maketitle
+\begin{feature}{utf-2000}
+ UTF-2000 \e$B5!G=$rDs6!$9$k!#\e(B
+
+ \begin{example}
+ (featurep 'utf-2000)
+ \e$B"*\e(B t
+ \end{example}
+\end{feature}
+
\begin{function}{define-char}{char-spec}
\e$BJ8;zB0@-$N=89g\e(B \var{char-spec} \e$B$GI=8=$5$l$kJ8;z%*%V%8%'%/%H$rDj5A$7!"\e(B
\e$B$=$NJ8;z%*%V%8%'%/%H$rJV$9!#\e(B