twocolumn状态下怎么实现onecolumn的footnote，即双栏中如何排版通栏脚注。
查了些资料都没找到解决的方法，是不是有什么方便的宏包？还是要怎么设置一下就OK了？
参看：
http://bbs.chinatex.org/forum.php?mod=viewthread&tid=3586&page=1&extra=#pid9792
问题解决方案：
日本人 93 年写的宏包即：1-in-2.sty。
测试文件和宏包下载地址：http://cid-3cfe530319707374.office.live.com/self.aspx/ChinaTeX/1-in-2/1-in-2test.rar
测试代码如下：
% sample is here : 1-in-2.tex
%
\documentclass[twocolumn]{article}
%
\usepackage{1-in-2}
\textwidth=420pt \textheight=600pt \columnsep=20pt
\newcommand{\bs}{{\tt\symbol{'134}}}
\newcommand{\fat}[1]{\mbox{\boldmath{$#1$}}}
%
\title{{\sc One-Column Abstract and Footnote \\
in the Two-Column Documents}\thanks{This is
a \protect\LaTeX\ footnote for the title of this article.}}
%
\author{{\sc an Author}\thanks{Institution of the first author,
Department of that institution. Full address for ordinary mailing system. An {\bf\ e-mail} address at the end if any.}
\and {\sc another Author}\thanks{Work place of the second author.}}
%
% \institution{University Somewhere} % if you need it
%
\abstract{% No blank line This is the main abstract.
Four functions related to `{\tt onecolumn}' output are added in `{\tt twocolumn}' article.
1) footnotes created by {\bs}{\tt thanks} are set in one-column format.
2) abstract and keywords are put right below the author list in one-column format.
3) the bottom of two columns at the last page is aligned so that some text such as abstract can be put below in one-column format.
4) footnote of the textwidth can be set at any page.}
%
\keywords{two-column, one-column, maketitle, footnote}
%
\endabstract{% Yes blank line
This is the part of abstract at the end.
Four functions related to `{\tt onecolumn}' output are added
in `{\tt twocolumn}' article.
1) footnotes created by {\bs}{\tt thanks} are set in one-column format.
2) abstract and keywords are put right below the author list in one-column format.
3) the bottom of two columns at the last page is aligned so that some text such as abstract can be put below in one-column format.
4) footnote of the textwidth can be set at any page.}
%
\begin{document}
\maketitle
\section{PROBLEM}
As is often observed in the proceedings of engineering societies, the manuscript is written in two-column format. But at the end of the main body of the article, the abstract may be included in one-column format. Or, the abstract may be located at the beginning of the article, but is not in the left-column where the ordinary \verb+\begin{abstract}+ places the abstract. Key words are also listed right below the main title.
Furthermore the footnotes about the title and authors are sometimes set in one-column form within the two-column document. It is easy to handle these kinds of outputs if one uses `multicol.sty'. However, this style file inhibits us from using `floats' within the column.
\section{MODIFICATION}
The one-column layout of abstract around the main title can be specified by changing the definition of \verb+\@maketitle+. Read the corresponding parts in the preamble of this document.
If one needs the abstract right below the title, it can be defined by a command
\begin{quote}\verb+\abstract{....}+\end{quote}
where no blank line is permitted. If a couple of paragraphs are needed within the abstract, change the way of definition of
\verb+\abstract+ to \verb+\long\def\abstract#1{...+.
One must be careful in using \verb+\verb+ within
\verb+\abstract+.
\begin{figure}[h]
\setlength{\unitlength}{1mm}
\begin{center}\begin{picture}(50,20)(0,0)
\framebox(50,20){{\sc Figure}}\end{picture}\end{center}
\caption{One-Column Figure}
\end{figure}
Key words can be defined similarly by a command ( \fbox{{\bs}{\tt rightfootnotepage}} may be put around here, only when necessary.) \begin{quote} \verb+\keywords{...}+ \end{quote} which will appear in italic. Both \verb+\abstract+ and \verb+\keywords+ are not necessarily defined,
\end{document}