\marginnote有没有办法根据调用的位置来指定双面纸上边注的哪一侧？
下图解释了我的意思：
这是我的测试代码：
%% PNAStwoS.tex
%% Sample file to use for PNAS articles prepared in LaTeX
%% For two column PNAS articles
%% Version: Apr 15, 2008
%% BASIC CLASS FILE
\documentclass{pnastwo}
\usepackage{caption}
\usepackage{subcaption}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{ragged2e}
\usepackage[cmex10]{amsmath}
\usepackage{float}
%% ADDITIONAL OPTIONAL STYLE FILES
\usepackage[dvips]{graphicx}
\usepackage{pnastwoF}
\usepackage{amssymb,amsfonts,amsmath}
\usepackage{marginnote}
\setlength{\marginparwidth}{1.5cm}
\setlength{\marginparsep}{0.1cm}
%% OPTIONAL MACRO DEFINITIONS
\def\s{\sigma}
%%%%%%%%%%%%
%% For PNAS Only:
\url{www.pnas.org/cgi/doi/10.1073/pnas.0709640104}
\copyrightyear{2008}
\issuedate{Issue Date}
\volume{Volume}
\issuenumber{Issue Number}
%\setcounter{page}{2687} %Set page number here if desired
%%%%%%%%%%%%
\begin{document}
\title{Almost sharp fronts for the surface geostrophic equation}
\author{xxxx\affil{1}{xxxx},
xxx\affil{2}{xxxn},
\and
xxx\affil{2}{}}
\contributor{xxx}
\maketitle
\begin{article}
\begin{abstract}
\marginnote{Note on the left} xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
\end{abstract}
\keywords{monolayer | structure | x-ray reflectivity | molecular electronics}
\abbreviations{SAM, self-assembled monolayer; OTS,
octadecyltrichlorosilane}
\dropcap{I}n this article we study the evolution of ``almost-sharp'' fronts
for the surface quasi-geostrophic equation. This 2-D active scalar
equation reads for the surface quasi-geostrophic equation.
\marginnote{Note on the right} end.
\end{article}
\end{document}
此类代码的结果是：
所有笔记都在右侧。我需要其中一个在左侧。
我已将最小的测试及其所需的类文件上传至：https://dl.dropboxusercontent.com/u/45318932/mariginnotetest.zip