在LaTeX中使用\ hline的错误未中断编译，但也许我这样做的方式是错误的]]

Question

因此，我正在使用\hline为\section{}的标题创建一些下划线，但出现错误

Misplaced \noalign.
You have used a \hline command in the wrong place, probably outside a table. If the \hline command is written inside a table, try including \\ before it.
\hline ->\noalign 
                  {\ifnum 0=`}\fi \hrule \@height \arrayrulewidth \futurelet...
l.15     \hline
I expect to see \noalign only after the \cr of
an alignment. Proceed, and I'll ignore this case.
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage[dvipsnames]{xcolor}
\setlength{\emergencystretch}{10pt}
\title{Law and Society Notes}
\author{Jack Dwyer }
\date{}


\begin{document}

\maketitle
\section{January 31}
    \hline
    \begin{itemize}
        \item[] \hline
        \item Types of law
        \begin{itemize}
            \item Oral Nomoi
            \item Thesmoi
            \item Written Nomoi
            \item Psephismata
        \end{itemize}{}
        \item Distinctions not drawn between criminal and civil cases or judicial, legislative, or administrative cases
        \item Types of cases
        \begin{itemize}
            \item Dikē(Public)
            \item Graphē(semi-public)
        \end{itemize}{}
        \item Sycophant – suck up
        \item Righteous Indignation
    \end{itemize}{}

所以我使用\ hline为\ section {}的标题创建了一些下划线，但出现了错误的\ noalign错误。您在错误的地方使用了\ hline命令，可能在...

Answer 1

\hline用于表格内部。您可以使用\hrulefill，或者最好不要手动在该部分下划线，而是适当地设置其格式，例如https://tex.stackexchange.com/a/453372