\delete 和 changes 包的控制序列未定义

Question

当我尝试编译源代码时，我不断收到以下错误消息：

! Undefined control sequence

之前，我无法编译，看到另一个问题已经回答并添加

\usepackage{etex}

到我的代码。现在，在编译时，我得到了上述未定义的控制序列，引用

\delete

以下是 MWE：

\documentclass[a4paper,12pt,twoside]{book}
\usepackage{etex}
\usepackage{amsmath,amssymb,amscd,amsbsy,array,color,epsfig}

\usepackage{changes}

\begin{document}

\chapter{Logic, Set Theory, Functions, and Relations.}
\section{Mathematical Logic.}
\subsection{Introduction.}
\small{Analysis is all about the theory behind Calculus. In this course, we do not take for granted such notions as what the set $\mathbb{R}$ of real numbers is; rather we carefully define $\mathbb{R}$ by `building' it out of other sets - beginning with the set $\mathbb{N}$ of Natural Numbers. Numbers and number systems (i.e. $\mathbb{N}, \mathbb{Z}, \mathbb{Q}, \mathbb{R},$ and $\mathbbC}$) are the `building-blocks' of Analysis. Here in this book, we do not merely state the properties of the Real Number System, but we derive them. \\
However, \deleted[id=MD,remark=blah blah blah]{Would you like any toast?} before we do that (and we shall in Chapter 1), we first \delete[id=MD,remark=blah blah blah]{present}  this introductory chapter - Chapter 0 - in order to give the reader the tools needed to carry on this study of the branch of mathematics known as Analysis. Here, we present a `brief' review of Mathematical Logic, Set Theory, Functions, and Relations; and we `informally' define a few sets of which we shall make frequent use of in Analysis. All of them (or most of them) shall be dealt with more formally in the next chapter.}

\end{document}

我遗漏了我使用的许多附加包，由于错误在文档中出现得如此之快，我只显示了文档本身的第一部分。请原谅我，因为我对 changes 包没有什么经验，但我认为我加载正确，语法也正确。

谢谢，-MD

Answer 1

您当前的文档存在以下错误或问题：

1. \mathbbC}-> \mathbb{C}；

2. changes没有定义\delete，只有\deleted；

3. 您需要将author/id定义MD为“更改作者”才可以使用，因此\definechangesauthor[<options>]{MD}加载后需要\usepackage{changes}；

4. 不建议使用它\\来分隔段落。留空行或发出明确\par。如果您不喜欢缩进，请参阅关闭单行段落缩进。或者，\setlength{\parindent}{0pt}将删除文档中的所有段落缩进。

这是一个完整的最小示例：

\documentclass{article}
\usepackage{amssymb,changes}
\definechangesauthor{MD}

\begin{document}

Analysis is all about the theory behind Calculus. In this course, we do not
take for granted such notions as what the set~$\mathbb{R}$ of real numbers 
is; rather we carefully define~$\mathbb{R}$ by `building' it out of other 
sets---beginning with the set~$\mathbb{N}$ of Natural Numbers. Numbers and 
number systems (\textit{i.e.\/}\ $\mathbb{N}$, $\mathbb{Z}$,
$\mathbb{Q}$,~$\mathbb{R}$ and~$\mathbb{C}$) are the `building-blocks' of 
Analysis. Here in this book, we do not merely state the properties of the 
Real Number System, but we derive them.

However, \deleted[id=MD,remark=blah blah blah]{Would you like any toast?} 
before we do that (and we shall in Chapter 1), we first 
\deleted[id=MD,remark=blah blah blah]{present} this introductory 
chapter---Chapter~0---in order to give the reader the tools needed to carry 
on this study of the branch of mathematics known as Analysis. Here, we 
present a `brief' review of Mathematical Logic, Set Theory, Functions, and 
Relations; and we `informally' define a few sets of which we shall make 
frequent use of in Analysis. All of them (or most of them) shall be dealt 
with more formally in the next chapter.

\end{document}