我想知道是否有人知道我如何修改具有乳胶文档的一般样式以便该section部分subsection遵循subsubsection我在下图中显示的规范。
目前，我对section和subsection部分所做的事情是这样的：
\section{\underline{THIS IS THE SECTION TITLE}}
\subsection{\textit{This is the subsection title}}
据我所知，对于使用 Times New Roman 的部分subsubsection，不可能使用小写字母，因此大写字母就可以了。
- - - 模板。
\documentclass[a4paper,12pt]{exam}
% PAQUETES PRINCIPALES
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage[bitstream-charter]{mathdesign} % Paquete de fuentes matemáticas.
\usepackage[spanish, es-tabla]{babel} % Paquete de caracteres y títulos en español
\usepackage[utf8]{inputenc} % Permite escribir con acentos.
\usepackage{newtxtext,newtxmath} % Permite cambiar el tipo de letra a Times New Roman
\usepackage{lipsum} % Permite añadir texto LIPSUM.
\usepackage{ragged2e} % Paquete de alineación del texto.
\usepackage{amsmath} % Paquete para insertar símbolos matemáticos
\usepackage{hyperref} % Paquete para insertar referencias en el texto
\hypersetup{ % Establecer las propiedades para las referencias.
colorlinks = true,
linkcolor = matlab_blue,
urlcolor = matlab_blue,
citecolor = matlab_blue
}
\usepackage{textcomp,gensymb} % Paquetes que permiten agregar símbolos al texto.
\usepackage{float} % Paquete para tratar figuras y tablas como flotantes
\usepackage{lipsum} % Paquete para insertar texto mudo
\usepackage[none]{hyphenat} % Eliminar la división de palabras en el texto.
\setlength{\parindent}{0pt}
% Permite definir el símbolo de diámetro
\usepackage{wasysym}
\usepackage{enumitem}
% PAQUETES PARA LA DEFINICIÓN DE COLORES.
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage[dvipsnames,table,xcdraw]{xcolor}
\definecolor{airforceblue}{rgb}{0.36, 0.54, 0.66}
\definecolor{matlab_blue}{rgb}{0, 0.447 0.741}
% MODIFICAR LA ZONA EN LA QUE SE INCUYE EL RESUMEN
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\renewenvironment{abstract} % Modifica la alineación del resumen.
{\par\noindent\textbf{\abstractname}\ \ignorespaces \\}
{\par\noindent\medskip}
% PAQUETES PARA TRABAJAR CON FIGURAS.
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage{graphicx} % Paquete para insertar imágenes en latex.
\graphicspath{ {images/} } % Ruta para buscar las imágenes.
\usepackage{caption} % Modificaciones en el título de las figuras.
\usepackage{subcaption} % Modificaciones independientes en los títulos.
% - Permite cambiar la numeración de las figuras para incluir el número de la sección
% - y también cambia el estilo del texto
\setcounter{figure}{0}
\renewcommand{\thefigure}{\arabic{section}.\arabic{figure}}
\captionsetup[figure]{labelfont={it},textfont=it,labelsep=period,font=small}
% - Permite cambiar la numeración de las tablas para incluir el número de la sección
% - y también cambia el estilo del texto
\renewcommand{\thetable}{\arabic{section}.\arabic{table}}
\captionsetup[table]{labelfont={it},textfont=it,labelsep=period,font=small}
% - Código que permite eliminar la línea en blanco de forma previa a
% - incluir una enumeración
\setlist[itemize]{noitemsep, topsep=-12pt, after=\vspace{\baselineskip}}
\usepackage{array}
\newenvironment{conditions}
{\par\vspace{\abovedisplayskip}\noindent\begin{tabular}{>{$}l<{$} @{${}={}$} l}}
{\end{tabular}\par\vspace{\belowdisplayskip}}
% ESTABLECER LOS MÁRGENES DEL DOCUMENTO
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage[a4paper,top=20mm,left=25mm,right=20mm,bottom=20mm,headheight=20mm]{geometry}
% CAMBIAR EL INTERLINEADO DEL DOCUMENTO
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage{setspace}
\spacing{1}
% CREAR PÁGINAS EN BLANCO HASTA LLEGAR A PÁGINA PAR
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage{changepage,ifthen}
\newcommand\skiptoevenpage{%
\checkoddpage
\ifthenelse{\boolean{oddpage}}%
{\null\clearpage}%
{\null\clearpage \null \clearpage}%
}
% CREAR PÁGINAS EN BLANCO HASTA LLEGAR A PÁGINA IMPAR
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\newcommand\skiptooddpage{%
\checkoddpage
\ifthenelse{\boolean{oddpage}}%
{\null\clearpage \null \clearpage}%
{\null\clearpage}%
}
% CREAR EL ENCABEZADO DEL DOCUMENTO
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\header{}{}{HEADER}
\headrule
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\begin{document} \sloppy
\section{\underline{THIS IS THE SECTION TITLE}} %% THIS IS WRONG!!
\lipsum[2-4]
\textit{\subsection{\underline{This is the subsection title}}} %% THIS IS WRONG!!
\lipsum[1]
\textit{\subsubsection{\underline{This is the subsubsection title}}} %% THIS IS WRONG!!
\lipsum[1]
\end{document}
答案1
以下定义了您的章节格式。我稍微整理了一下您的序言（删除了与章节格式无关的所有内容）。
请注意，一旦加载，\usepackage[bitstream-charter]{mathdesign}斜体小写字母将不再起作用。你真的需要那个包吗？你还可以加载newtxmath以更改你的数学字体。
\documentclass[a4paper,12pt]{exam}
% PAQUETES PRINCIPALES
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage[spanish, es-tabla]{babel} % Paquete de caracteres y títulos en español
\usepackage{newtxtext,newtxmath} % Permite cambiar el tipo de letra a Times New Roman
\usepackage{ragged2e}
\setlength{\parindent}{0pt}% BAD PRACTICE!
% ESTABLECER LOS MÁRGENES DEL DOCUMENTO
% ----------------------------------------------------------------------------------------
% ----------------------------------------------------------------------------------------
\usepackage[a4paper,top=20mm,left=25mm,right=20mm,bottom=20mm,headheight=20mm]{geometry}
% stuff necessary for the headings
\usepackage[explicit]{titlesec}
\usepackage[normalem]{ulem}
\usepackage{xfp}
\newlength\TitleUnderlineSeg
\setlength\TitleUnderlineSeg{.05pt}
\newcommand*\TitleUnderlineThickness{.15ex}% not a length to get re-evaluated
\newcommand\TitleUnderline[1]
{%
\bgroup
\markoverwith
{%
\rule
[-.7ex]
{\TitleUnderlineSeg}
{\TitleUnderlineThickness}%
}%
\ULon{#1}%
}
\makeatletter
\ExplSyntaxOn
\cs_new_eq:NN \TextUppercase \text_uppercase:n
\ExplSyntaxOff
\newcommand\setuptitleformat[1]
{%
\expandafter\setuptitleformat@\csname #1\endcsname{#1}%
}
\newcommand*\setuptitleformat@[7]
{%
\begingroup
\edef\tmp
{%
\endgroup
\unexpanded{\titleformat{#1}}%
{%
\noexpand\fontsize{#3pt}{\fpeval{1.6*#3}pt}%
\unexpanded{\raggedright\bfseries#7}%
}%
}%
\tmp
{\leavevmode\kern#4\csname the#2\endcsname.#5}
{0pt}
{\begingroup\edef\tmp{\endgroup\noexpand\TitleUnderline{#6}}\tmp}%
\begingroup
\edef\tmp
{%
\endgroup
\unexpanded{\titleformat{name=#1,numberless}}%
{%
\noexpand\fontsize{#3pt}{\fpeval{1.6*#3}pt}%
\unexpanded{\raggedright\bfseries#7}%
}%
}%
\tmp
{}
{0pt}
{\begingroup\edef\tmp{\endgroup\noexpand\TitleUnderline{#6}}\tmp}%
}
% level size indent separation formatting
\setuptitleformat{section} {18}{-.63cm}{ \space}{\TextUppercase{#1}}{}
\setuptitleformat{subsection} {14} {0pt}{ } {\unexpanded{#1}} {\itshape}
\setuptitleformat{subsubsection}{12} {0pt}{} {\unexpanded{#1}} {\itshape\scshape}
% undefine the helper macros
\let\setuptitleformat \@undefined
\let\setuptitleformat@\@undefined
\makeatother
\usepackage{lipsum} % dummy text
\begin{document}
\section{This is the section title}
\subsection{This is the subsection title}
\subsubsection{This is the subsubsection title}
\lipsum[1]
\section{Really long section title that is really long, so long it needs more
than one line to be fully printed}
\subsection{Really long subsection title that is really long, so long it needs
more than one line to be fully printed}
\subsubsection{Really long subsubsection title that is really long, so long it
needs more than one line to be fully printed}
\section*{Really long section title that is really long, so long it needs more
than one line to be fully printed}
\subsection*{Really long subsection title that is really long, so long it needs
more than one line to be fully printed}
\subsubsection*{Really long subsubsection title that is really long, so long it
needs more than one line to be fully printed}
\end{document}
