我以前曾尝试制作一个包含问题和答案的文档。在之前的一个问题中，我了解到一种很好的方法，即使用包answer与 结合使用hyperref。
问题是文档已经变得相当大，有 100 多页了。我需要在而subsubsection
不是“小节”中重置答案和问题的计数器。我尝试更改提供的答案中的计数器，但遗憾的是文档要么编译失败，要么根本没有改变。
这是一个最小的工作示例，计数器在子部分级别重置 http://spot.pcc.edu/~chughes/buzzard/
我知道这似乎是一个微不足道的问题，但对于像我这样的新手来说，代码很难解释。
一个更简单的例子，backhypperrefs 在这里失败了。此外，我无法重现无法区分子部分的错误
\documentclass{article}
\usepackage{answers}
\usepackage{enumitem}
\usepackage{hyperref}
\usepackage{multicol}
\hypersetup{colorlinks=true}
\setlength{\parindent}{0.0mm}
% very useful during de-bugging!
%\usepackage[left]{showlabels}
%\showlabels{hypertarget}
%\showlabels{hyperlink}
% solutions files
% short solutions
\Opensolutionfile{shortsolutions}
\Newassociation{shortsolution}{shortSoln}{shortsolutions}
% long solutions
\Opensolutionfile{longsolutions}
\Newassociation{longsolution}{longSoln}{longsolutions}
% new environment that sets up hypertargets both in the question
% section, and in the answer section
\newlist{myenum}{enumerate}{3}
\newcounter{question}[subsubsection]
\newenvironment{question}[1]%
{%
\refstepcounter{question}%
% hyperlink to solution
\hypertarget{question:{\thequestion}}{}%
\Writetofile{shortsolutions}{\protect\hypertarget{shortsoln:\thequestion}{}}%
\Writetofile{longsolutions}{\protect\hypertarget{longsoln:\thequestion}{}}%
\begin{myenum}[label=\bfseries\protect\hyperlink{shortsoln:\thequestion}{\thequestion},ref=\thequestion]
\item%
\hypersetup{linkcolor=blue}%
\hyperlink{longsoln:\thequestion}{#1}%
}%
{%
\end{myenum}}
\begin{document}
\section{Questions}
\subsubsection{Set I}
\begin{multicols}{3}
\begin{question}{$\int\sqrt{4-x}\mathrm{d}x$}
\begin{shortsolution}
$-\frac{2}{3}(4-x)^{\frac{3}{2}}+C$
\end{shortsolution}
\begin{longsolution}
In order to do this, we must first make a substitution\ldots
\end{longsolution}
\end{question}
\begin{question}{$\int(2x-1)^{50}\mathrm{d}x$}
\begin{shortsolution}
$\frac{1}{102}(2x-1)^{51}+C$
\end{shortsolution}
\begin{longsolution}
A very long solution| much longer than the shorter solution
\end{longsolution}
\end{question}
\begin{question}{$\int\sqrt[n]{x}\mathrm{d}x$}
\begin{shortsolution}
$\frac{n}{n+1}x^{\frac{1+n}{n}}+C$
\end{shortsolution}
\begin{longsolution}
Even longer!
\end{longsolution}
\end{question}
\end{multicols}
\subsubsection{Set II}
\begin{multicols}{3}
\begin{question}{$\int\sqrt{x}\mathrm{d}x$}
\begin{shortsolution}
$\frac{n}{n+1}x^{\frac{1+n}{n}}+C$
\end{shortsolution}
\begin{longsolution}
Even longer!
\end{longsolution}
\end{question}
\begin{question}{$\int\sqrt{4-x}\mathrm{d}x$}
\begin{shortsolution}
$-\frac{2}{3}(4-x)^{\frac{3}{2}}+C$
\end{shortsolution}
\begin{longsolution}
In order to do this, we must first make a substitution\ldots
\end{longsolution}
\end{question}
\begin{question}{$\int(2x)^{50}\mathrm{d}x$}
\begin{shortsolution}
$\frac{1}{102}(2x-1)^{51}+C$
\end{shortsolution}
\begin{longsolution}
A very long solution| much longer than the shorter solution
\end{longsolution}
\end{question}
\end{multicols}
\clearpage
\section{Questions}
\subsubsection{Set I}
\begin{multicols}{3}
\begin{question}{$\int\sqrt{4-x}\mathrm{d}x$}
\begin{shortsolution}
$-\frac{2}{3}(4-x)^{\frac{3}{2}}+C$
\end{shortsolution}
\begin{longsolution}
In order to do this, we must first make a substitution\ldots
\end{longsolution}
\end{question}
\begin{question}{$\int(2x-1)^{50}\mathrm{d}x$}
\begin{shortsolution}
$\frac{1}{102}(2x-1)^{51}+C$
\end{shortsolution}
\begin{longsolution}
A very long solution| much longer than the shorter solution
\end{longsolution}
\end{question}
\begin{question}{$\int\sqrt[n]{x}\mathrm{d}x$}
\begin{shortsolution}
$\frac{n}{n+1}x^{\frac{1+n}{n}}+C$
\end{shortsolution}
\begin{longsolution}
Even longer!
\end{longsolution}
\end{question}
\end{multicols}
\subsubsection{Set II}
\begin{multicols}{3}
\begin{question}{$\int\sqrt{x}\mathrm{d}x$}
\begin{shortsolution}
$\frac{n}{n+1}x^{\frac{1+n}{n}}+C$
\end{shortsolution}
\begin{longsolution}
Even longer!
\end{longsolution}
\end{question}
\begin{question}{$\int\sqrt{4-x}\mathrm{d}x$}
\begin{shortsolution}
$-\frac{2}{3}(4-x)^{\frac{3}{2}}+C$
\end{shortsolution}
\begin{longsolution}
In order to do this, we must first make a substitution\ldots
\end{longsolution}
\end{question}
\begin{question}{$\int(2x)^{50}\mathrm{d}x$}
\begin{shortsolution}
$\frac{1}{102}(2x-1)^{51}+C$
\end{shortsolution}
\begin{longsolution}
A very long solution| much longer than the shorter solution
\end{longsolution}
\end{question}
\end{multicols}
% close solution files
\Closesolutionfile{shortsolutions}
\Closesolutionfile{longsolutions}
\clearpage
\section{SHORT answers}
% renew the SHORT solution environment so that it hyperlinks back to
% the question
\renewenvironment{shortSoln}[1]{%
% add some glue
\vskip .5cm plus 2cm minus 0.1cm%
{\bfseries \hyperlink{question:#1}{#1.}}%
}%
{%
}%
% input the file if it exists
\IfFileExists{shortsolutions.tex}{\input{shortsolutions.tex}}{}
\clearpage
\section{LONG answers}
% renew the LONG solution environment so that it hyperlinks back to
% the question
\renewenvironment{longSoln}[1]{%
% add some glue
\vskip .5cm plus 2cm minus 0.1cm%
{\bfseries \hypersetup{linkcolor=blue}\hyperlink{question:#1}{#1.}}%
}%
{%
}%
% input the file if it exists
\IfFileExists{longsolutions.tex}{\input{longsolutions.tex}}{}
\end{document}