\documentclass[a4paper,12pt]{jarticle}
\usepackage{amsmath, amssymb}
\usepackage{graphicx}
\usepackage{color}
\usepackage{fancyhdr}
\usepackage{geometry}
\usepackage{enumerate}
\usepackage{url}
\usepackage{multicol}
\usepackage{booktabs}
\usepackage{array}
\usepackage{verbatim}
\usepackage{ascmac}
\usepackage{okumacro}
\usepackage{setspace}
\usepackage{listings}
\usepackage{xcolor}
\usepackage{caption}
\geometry{top=25mm, bottom=25mm, left=25mm, right=25mm}
\setlength{\headheight}{17pt}
\addtolength{\topmargin}{-5pt}
\pagestyle{fancy}
\fancyhf{}
\lhead{pLaTeX Sample Document}
\rhead{\today}
\cfoot{\thepage}
\renewcommand{\headrulewidth}{0.4pt}
\lstset{
basicstyle=\ttfamily\small,
keywordstyle=\color{blue}\bfseries,
commentstyle=\color{green!50!black},
stringstyle=\color{red!70!black},
numbers=left,
numberstyle=\tiny\color{gray},
frame=single,
breaklines=true,
tabsize=4,
}
\title{\textbf{pLaTeX Feature Showcase}\\[5pt]
\large --- Typical usage of Japanese \LaTeX ---}
\author{John Doe\thanks{Department of Computer Science, Sample University}
\and Jane Doe}
\date{\today}
\begin{document}
\maketitle
\thispagestyle{fancy}
\begin{abstract}
This document demonstrates the major features of pLaTeX.
It covers document class and package loading, Japanese typesetting features,
math environments, tables, figures, cross-references, footnotes,
ruby (furigana), kenten (emphasis dots), source code listings,
multi-column layout, and custom commands.
\end{abstract}
\tableofcontents
\newpage
\section{Japanese Typesetting Basics}
\subsection{Mixing Japanese and Latin Text}
pLaTeX handles Japanese and Latin text naturally in the same document.
ASCII characters such as ``Hello, World!'' and \texttt{LaTeX2e}
are automatically spaced appropriately.
Spacing between full-width and half-width characters is adjusted automatically:
JapaneseEnglishJapanese, numbers 123 Japanese, symbol \
\subsection{Ruby (Furigana)}
The \verb|\ruby| command from the \texttt{okumacro} package adds ruby annotations.
\begin{center}
\ruby{漢字}{かんじ}、\ruby{情報処理}{じょうほうしょり}、
\ruby{自然言語}{しぜんげんご}\ruby{処理}{しょり}
\end{center}
\subsection{Kenten (Emphasis Dots)}
The \verb|\kenten| command from \texttt{okumacro} adds emphasis dots above characters.
\begin{center}
\kenten{Important text} can be emphasized with kenten dots.
\end{center}
\subsection{Font Sizes}
{\tiny tiny} {\scriptsize scriptsize} {\footnotesize footnotesize} {\small small}
{\normalsize normalsize} {\large large} {\Large Large} {\LARGE LARGE}
{\huge huge} {\Huge Huge}
\subsection{Text Decoration}
\begin{itemize}
\item \textbf{Bold}
\item \textit{Italic}
\item \textsl{Slanted}
\item \textsc{Small Caps}
\item \texttt{Typewriter (monospace)}
\item \underline{Underlined text}
\item \textcolor{red}{Red text}
\item \textcolor{blue!70!black}{Blue text}
\item \colorbox{yellow}{Highlighted background}
\end{itemize}
\section{Document Structure}
\subsection{Heading Levels}
\texttt{jarticle} supports the following heading levels:
\verb|\section|, \verb|\subsection|, \verb|\subsubsection|,
\verb|\paragraph|, and \verb|\subparagraph|.
\subsubsection{Subsubsection Example}
This is a subsubsection.
\paragraph{Paragraph Heading}
This is an example of a paragraph heading. Body text follows without indentation.
\subsection{Footnotes}
Footnotes\footnote{This is the footnote text. It is placed automatically at the bottom of the page.}
can be added inline. Multiple footnotes\footnote{A second footnote. Numbers are assigned automatically.}
are supported.
\subsection{Cross-references}
Adding \verb|\label| allows referencing with \verb|\ref| and \verb|\pageref|.
Example: the next section is Section~\ref{sec:math} (page~\pageref{sec:math}).
\section{Math Environments}
\label{sec:math}
\subsection{Inline and Display Math}
Inline math: $E = mc^2$, $\alpha + \beta = \gamma$,
$\sum_{i=1}^{n} i = \frac{n(n+1)}{2}$.
Display math:
\[
\int_{-\infty}^{\infty} e^{-x^2}\,dx = \sqrt{\pi}
\]
\subsection{equation and align Environments}
Numbered equation (\texttt{equation}):
\begin{equation}
\label{eq:euler}
e^{i\pi} + 1 = 0
\end{equation}
Equation~\eqref{eq:euler} is Euler's identity.
Multi-line alignment (\texttt{align}):
\begin{align}
(a+b)^2 &= a^2 + 2ab + b^2 \\
(a-b)^2 &= a^2 - 2ab + b^2 \\
(a+b)(a-b) &= a^2 - b^2
\end{align}
\subsection{Matrices and Vectors}
\begin{equation}
A = \begin{pmatrix} a_{11} & a_{12} \\ a_{21} & a_{22} \end{pmatrix},\quad
\det(A) = a_{11}a_{22} - a_{12}a_{21}
\end{equation}
\subsection{Cases, Fractions, and Limits}
\begin{equation}
f(x) = \begin{cases}
x^2 & (x \geq 0) \\
-x^2 & (x < 0)
\end{cases}, \qquad
\lim_{n\to\infty} \left(1 + \frac{1}{n}\right)^n = e
\end{equation}
\section{Tables (tabular Environment)}
\subsection{Basic Table}
\begin{table}[h]
\centering
\caption{Temperature Data by City (sample)}
\label{tab:temp}
\begin{tabular}{lrrr}
\toprule
City & High (°C) & Low (°C) & Avg (°C) \\
\midrule
Tokyo & 35.2 & 25.1 & 29.8 \\
Osaka & 36.4 & 26.3 & 31.0 \\
Sapporo & 28.7 & 19.5 & 23.9 \\
Naha & 32.1 & 27.4 & 29.8 \\
\bottomrule
\end{tabular}
\end{table}
\subsection{Complex Table (\texttt{array} Extension)}
\begin{table}[h]
\centering
\caption{Programming Language Comparison}
\label{tab:lang}
\begin{tabular}{|l|c|c|c|}
\hline
Language & Typing & Paradigm & Main Use \\
\hline\hline
Python & Dynamic & Multi & AI/Data Science \\
Rust & Static & Systems & Systems Programming \\
Haskell & Static & Functional & Research/Finance \\
JavaScript & Dynamic & Multi & Web Frontend \\
\hline
\end{tabular}
\end{table}
Tables~\ref{tab:temp} and~\ref{tab:lang} can be referenced using \verb|\label/\ref|.
\section{List Environments}
\subsection{Bullet List (itemize)}
\begin{itemize}
\item First item
\item Second item
\begin{itemize}
\item Nested item A
\item Nested item B
\end{itemize}
\item Third item
\end{itemize}
\subsection{Numbered List (enumerate)}
\begin{enumerate}[(1)]
\item First step
\item Next step
\item Final step
\end{enumerate}
\subsection{Description List (description)}
\begin{description}
\item[pLaTeX] Japanese-capable \LaTeX engine
\item[upLaTeX] Unicode-aware successor to pLaTeX
\item[LuaLaTeX] \LaTeX engine with Lua scripting support
\end{description}
\section{Verbatim and Source Code}
\subsection{verbatim Environment}
\begin{verbatim}
#include <stdio.h>
int main(void) {
printf("Hello, pLaTeX!\n");
return 0;
}
\end{verbatim}
\subsection{Syntax Highlighting with listings}
\begin{lstlisting}[language=Python, caption={Fibonacci sequence (Python)}]
def fibonacci(n: int) -> int:
"""Compute Fibonacci number recursively."""
if n <= 1:
return n
return fibonacci(n - 1) + fibonacci(n - 2)
# Print the first 10 terms
for i in range(10):
print(f"F({i}) = {fibonacci(i)}")
\end{lstlisting}
\section{Box Environments}
The \texttt{ascmac} package provides \texttt{itembox}, \texttt{screen}, and similar environments.
\begin{itembox}[l]{Key Points}
\begin{itemize}
\item Use \texttt{jarticle} / \texttt{jbook} document classes for Japanese
\item \texttt{okumacro} provides ruby and kenten
\item Generate PDFs with \texttt{platex + dvipdfmx}
\end{itemize}
\end{itembox}
\vspace{5pt}
\begin{screen}
\texttt{screen} environment: a terminal-style box, useful for showing command output or code examples.
\end{screen}
\section{Multi-Column Layout}
The \texttt{multicol} package enables mid-document column switching.
\begin{multicols}{2}
\noindent
This is the left column of a two-column layout.
pLaTeX handles Japanese text in multi-column layouts naturally.
Long text is distributed evenly across columns automatically,
making it suitable for newspaper or magazine-style typesetting.
\columnbreak
\noindent
This is the right column.
Use \verb|\columnbreak| to force a column break.
Inline math such as $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$
works as expected.
\end{multicols}
\section{Spacing Adjustments}
\subsection{Horizontal Space}
Word spacing: a\,b (\verb|\,| thin space),
a\enspace b (\verb|\enspace|),
a\quad b (\verb|\quad|),
a\qquad b (\verb|\qquad|).
\subsection{Vertical Space}
Use \verb|\vspace| to insert vertical space.
\vspace{5mm}
Text after a 5mm vertical space.
\vspace{5mm}
\subsection{Line Spacing}
{\setstretch{1.8}
This paragraph uses \texttt{setstretch} from the \texttt{setspace} package
to set line spacing to 1.8x.
A spacing of 1.5 to 2.0 is generally considered readable for Japanese text.
}
\section{Custom Commands and Environments}
\subsection{Defining Custom Commands}
\newcommand{\R}{\mathbb{R}}
\newcommand{\N}{\mathbb{N}}
\newcommand{\highlight}[1]{\colorbox{yellow!60}{#1}}
\newcommand{\term}[1]{\textbf{\textit{#1}}}
Examples: $\R$ (real numbers), $\N$ (natural numbers).
\highlight{Highlighted text}.
\term{Machine learning} is a subfield of artificial intelligence.
\subsection{Defining Custom Environments}
\newenvironment{mybox}[1]{
\begin{center}\begin{tabular}{|p{0.85\linewidth}|}
\hline\vspace{1pt}
\textbf{#1}\\[2pt]
}{
\\\hline\end{tabular}\end{center}
}
\begin{mybox}{Custom Box}
Use \verb|\newenvironment| to define reusable environments.
They can accept arguments for flexible customization.
\end{mybox}
\section{References}
Cite references with the \verb|\cite| command~\cite{knuth1984,lamport1994,okumura2020}.
The reference list is output at the end of the document.
\begin{thebibliography}{99}
\bibitem{knuth1984}
D.~E. Knuth,
\textit{The \TeX book},
Addison-Wesley, 1984.
\bibitem{lamport1994}
L.~Lamport,
\textit{\LaTeX: A Document Preparation System}, 2nd ed.,
Addison-Wesley, 1994.
\bibitem{okumura2020}
H.~Okumura and Y.~Kuroki,
\textit{\LaTeXe Beautiful Document Creation Guide}, 8th ed.,
Gijutsu-Hyoronsha, 2020.
\end{thebibliography}
\end{document}
