\documentclass{appolb}
\usepackage{epsfig}
%------------------------------------------------------
% Include epsfig package for placing EPS figures in the text

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\begin{document}
%\date{\today}
\pagestyle{plain}
%% uncomment the following line to get equations numbered by (sec.num)
%\eqsec
\newcount\eLiNe\eLiNe=\inputlineno\advance\eLiNe by -1
\title{\LaTeXe{} DOCUMENT CLASS\\
FOR\\
ACTA PHYSICA POLONICA B%
\thanks{Send any remarks to {\tt acta@jetta.if.uj.edu.pl}}%
}
\author{Wojciech S\L{}OMI\'NSKI
\address{Institute of Computer Science, Jagellonian University,
Reymonta 4, 30-059~Krak\'ow, Poland}}
\maketitle

\begin{abstract}
Basic parameters, such as the page layout
and the font size, used by {\sl Acta Physica Polonica B} are defined.
This class is very similar to article.cls.
\end{abstract}

\section{Introduction}
The \LaTeXe{} document class {\tt appolb.cls} should be used 
by starting the file with\\
{\tt\verb|\documentclass{appolb}|}

Our main goal is to let the authors see how the text and equations
fit to our page layout --- the text column size is 126 mm
$\times$ 190 mm. The style is very similar to the original Latex
{\tt article}, \ie most of the commands are used in the same way although
some of them result in a different text formatting.
There are also some new commands, which are described below. 

\section{Options}
Optional parameters to the {\tt appolb} class can be given, as usually, in square
brackets, \eg\\
{\tt\verb|\documentclass[letterpaper,draft]{appolb}|}\\
Default options are: {\tt a4paper,final}.

{\parindent=0pt\obeylines
Available options:
{\tt draft} or {\tt final} --- show or hide the overfull rule
{\tt letterpaper} or {\tt a4paper} --- select paper size
}

\section{Commands}
\parindent=0pt
{\tt\verb|\eqsec|}

Call this macro before the first {\tt\verb|\section|}
command if you want equations numbered as 
(SectionNumber.EqNumber).
You can uncomment line \the\eLiNe\ of this file 
({\tt\jobname.tex}) to see the effect.

\subsection{Shortcuts}
{\obeylines
{\tt \verb|\ie|} gives: \ie
{\tt \verb|\eg|} gives: \eg
{\tt \verb|\cf|} gives: \cf
}
The macros provide appropriate spacing
without the need for any curly braces \{\}.

\subsection{Math mode operators}
{\tt \verb|\Tr|} gives: $\Tr$

{\tt \verb|\e|} gives: $\e$ --- straight `e' in math mode.

\subsection{{\tt eqletters} environment}

Enumarate equations with
a number and a lower-case letter, \eg
\begin{eqletters}
\label{myeq}
\begin{eqnarray}
A_1 &=& F(1)\,,
\label{me1}
\\
A_2 &=& F(2)\,.
\label{me2}
\end{eqnarray}
As long as the {\tt eqletters} environment is active all equations are
numbered with letters, \eg
\begin{equation}
L = \Half a = \half A
\end{equation}
\end{eqletters}

Equations (\ref{me1}) and (\ref{me2}) can be referenced as Eqs. (\ref{myeq}).
The {\tt \verb|\label|} statement used to generate the latter reference
must be placed outside any {\tt eqnarray} or {\tt equation} environment.

\end{document}

