对于在word中写的论文一般是使用【审阅】-【比较文档】来输出对比结果；对于overleaf，使用LaTeX排版，如何通过标记文字颜色来实现对比效果呢？？
1 批注功能-使用changes 宏包
在 LaTeX 中，changes 宏包是一个非常有用的工具，用于在文档中添加批注、插入和删除修改。它特别适用于论文写作和文档审阅。以下是如何使用 changes 宏包的一些基本步骤和示例：
（1）安装 changes 宏包
首先，确保你的 LaTeX 环境已经安装了 changes 宏包。如果没有安装，可以使用 TeX Live 或 MikTeX 等工具进行安装。
（2）在导言区加载宏包
在你的 LaTeX 文档的导言区添加以下行以加载 changes 宏包：
\usepackage[markup=default]{changes}
你可以根据需要选择不同的标记样式，如 markup=underlined 或 markup=highlight
（3）添加作者
如果有多个审阅者，可以添加他们的名字：
\setauthor{author1}
\setauthor{author2}
（4）使用批注功能
以下是一些常用命令：
-
插入文本：使用
\added命令 -
这是一个\added{新增的}句子。 -
删除文本：使用
\deleted命令。 -
这是一个\deleted{需要删除的}句子。
替换文本：使用 \replaced 命令。
这是一个\replaced{新的文本}{旧的文本}。
添加批注：使用 \highlight 或 \comment 命令。
这是一个\highlight{需要注意的部分}。
或者
这是一个需要\comment{这里需要更多解释}解释的句子。
（5）示例代码
下面是一个完整的示例代码：
\documentclass{article}
\usepackage[markup=default,authormarkup=none]{changes}
% Define authors and their colors
\definechangesauthor[name={Reviewer 1}, color=orange]{R1}
\definechangesauthor[name={Reviewer 2}, color=blue]{R2}
\definechangesauthor[name={Reviewer 3}, color=green]{R3}
\author{Author}
\title{Enhanced Example Document with Changes from Multiple Reviewers}
\begin{document}
\maketitle
This is an enhanced example document that demonstrates various modifications from different reviewers.
\section{Introduction}
Here we will demonstrate how to use the \added[id=R1]{changes package to} add annotations and modifications. This document has been reviewed by multiple reviewers, each providing their feedback and suggestions.
\section{Methods}
In the methods section, we \deleted[id=R2]{will describe our techniques in detail.} \replaced[id=R3]{use the changes package}{use other tools} to mark modifications. The methods employed in this study include both qualitative and quantitative approaches. \highlight[id=R3]{It is essential}to describe the statistical analysis in detail.\added[id=R1]{We also conducted a comprehensive literature review to support our methodology.}
\section{Results}
This is the results section, where you can use \highlight[id=R1]{highlight} to emphasize important content. \replaced[id=R2]{The results show a significant improvement in accuracy.}{The results are inconclusive and require further analysis.} \added[id=R3]{Additional experiments are needed to validate these findings.}
\section{Discussion}
In the discussion section, you can \comment[id=R2]{add more details} to explain the results. \deleted[id=R1]{The discussion lacks depth in certain areas.} \added[id=R1]{The implications of these results are far-reaching, suggesting that the proposed methods can be applied to a wide range of applications.} \highlight[id=R2]{Be sure to compare these findings with previous studies.}
\section{Conclusion}
The conclusion summarizes the key findings of the study. \replaced[id=R3]{Future work should focus on refining the methodology and exploring new applications.}{The current study provides a solid foundation for future research.} \deleted[id=R2]{It is essential to address the limitations mentioned in the discussion.}
\end{document}
如下
2 报错问题：
如果是为了输出不带批注的版本，引用changes包的时候加上final就可以了：
\usepackage[commandnameprefix=always,final]{changes}最对changes包选项进行修改，使用[commandnameprefix=always]修饰，
\usepackage[commandnameprefix=always]{changes}
这里的commandnameprefix=always选项确保了所有批注命令的前缀都是ch，这对于创建最终版本非常有用，因为这些前缀会在编译过程中被移除。
命令修改如下
\chadded{new text} %用于标记新添加的文本。
\chdeleted{old text} %用于标记被删除的文本。
\chreplaced{old text}{new text} %用于标记替换的文本。针对上文示例，修改如下
\documentclass{article}
\usepackage[commandnameprefix=always,markup=default,authormarkup=none]{changes}
% \usepackage[commandnameprefix=always,final,markup=default,authormarkup=none]{changes}
% Define authors and their colors
\definechangesauthor[name={Reviewer 1}, color=orange]{R1}
\definechangesauthor[name={Reviewer 2}, color=blue]{R2}
\definechangesauthor[name={Reviewer 3}, color=green]{R3}
\author{Author}
\title{Enhanced Example Document with Changes from Multiple Reviewers}
\begin{document}
\maketitle
This is an enhanced example document that demonstrates various modifications from different reviewers.
\section{Introduction}
Here we will demonstrate how to use the \chadded[id=R1]{changes package to} add annotations and modifications. This document has been reviewed by multiple reviewers, each providing their feedback and suggestions.
\section{Methods}
In the methods section, we \chdeleted[id=R2]{will describe our techniques in detail.} \chreplaced[id=R3]{use the changes package}{use other tools} to mark modifications. The methods employed in this study include both qualitative and quantitative approaches. \chhighlight[id=R3]{It is essential}to describe the statistical analysis in detail.\chadded[id=R1]{We also conducted a comprehensive literature review to support our methodology.}
\section{Results}
This is the results section, where you can use \chhighlight[id=R1]{highlight} to emphasize important content. \chreplaced[id=R2]{The results show a significant improvement in accuracy.}{The results are inconclusive and require further analysis.} \chadded[id=R3]{Additional experiments are needed to validate these findings.}
\section{Discussion}
In the discussion section, you can \chcomment[id=R2]{add more details} to explain the results. \chdeleted[id=R1]{The discussion lacks depth in certain areas.} \chadded[id=R1]{The implications of these results are far-reaching, suggesting that the proposed methods can be applied to a wide range of applications.} \chhighlight[id=R2]{Be sure to compare these findings with previous studies.}
\section{Conclusion}
The conclusion summarizes the key findings of the study. \chreplaced[id=R3]{Future work should focus on refining the methodology and exploring new applications.}{The current study provides a solid foundation for future research.} \chdeleted[id=R2]{It is essential to address the limitations mentioned in the discussion.}
\end{document}
