esp-idf/docs/latex_templates/preamble.tex

% package with esp-idf specific macros
\usepackage{espidf}

\setcounter{secnumdepth}{2}
\setcounter{tocdepth}{2}

\usepackage{amsmath,amsfonts,amssymb,amsthm}
\usepackage{graphicx}
%%% reduce spaces for Table of contents, figures and tables
%%% it is used "\addtocontents{toc}{\vskip -1.2cm}" etc. in the document
\usepackage[notlot,nottoc,notlof]{}

\usepackage{color}
\usepackage{transparent}
\usepackage{eso-pic}
\usepackage{lipsum}

%%% Needed for displaying Chinese in English documentation
\usepackage{xeCJK}

\usepackage{footnotebackref} %%link at the footnote to go to the place of footnote in the text

%% spacing between line
\usepackage{setspace}
\singlespacing


\definecolor{myred}{RGB}{229, 32, 26}
\definecolor{mygrayy}{RGB}{127, 127, 127}
\definecolor{myblack}{RGB}{64, 64, 64}


%%%%%%%%%%% datetime
\usepackage{datetime}

\newdateformat{MonthYearFormat}{%
    \monthname[\THEMONTH], \THEYEAR}


%% RO, LE will not work for 'oneside' layout.
%% Change oneside to twoside in document class
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}

% Header and footer
\makeatletter
  \fancypagestyle{normal}{
    \fancyhf{}
    \fancyhead[L]{\nouppercase{\leftmark}}
    \fancyfoot[C]{\py@HeaderFamily\thepage \\ \href{https://www.espressif.com/en/company/documents/documentation_feedback?docId=4287&sections=&version=\idfReleaseName}{Submit Document Feedback}}
    \fancyfoot[L]{Espressif Systems}
    \fancyfoot[R]{\idfReleaseName}
    \renewcommand{\headrulewidth}{0.4pt}
    \renewcommand{\footrulewidth}{0.4pt}
  }
\makeatother

\renewcommand{\headrulewidth}{0.5pt}
\renewcommand{\footrulewidth}{0.5pt}


% Define a spacing for section, subsection and subsubsection
% http://tex.stackexchange.com/questions/108684/spacing-before-and-after-section-titles

\titlespacing*{\section}{0pt}{6pt plus 0pt minus 0pt}{6pt plus 0pt minus 0pt}
\titlespacing*{\subsection}{0pt}{18pt plus 64pt minus 0pt}{0pt}
\titlespacing*{\subsubsection}{0pt}{12pt plus 0pt minus 0pt}{0pt}
\titlespacing*{\paragraph}    {0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}
\titlespacing*{\subparagraph} {0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}

% Define the colors of table of contents
% This is helpful to understand http://tex.stackexchange.com/questions/110253/what-the-first-argument-for-lsubsection-actually-is
\definecolor{LochmaraColor}{HTML}{1020A0}

% Hyperlinks
\hypersetup{
    colorlinks = true,
    allcolors = {LochmaraColor},
}


\RequirePackage{tocbibind} %%% comment this to remove page number for following
\addto\captionsenglish{\renewcommand{\contentsname}{Table of contents}}
\addto\captionsenglish{\renewcommand{\listfigurename}{List of figures}}
\addto\captionsenglish{\renewcommand{\listtablename}{List of tables}}
% \addto\captionsenglish{\renewcommand{\chaptername}{Chapter}}




%%reduce spacing for itemize
\usepackage{enumitem}
\setlist{nosep}

%%%%%%%%%%% Quote Styles at the top of chapter
\usepackage{epigraph}
\setlength{\epigraphwidth}{0.8\columnwidth}
\newcommand{\chapterquote}[2]{\epigraphhead[60]{\epigraph{\textit{#1}}{\textbf {\textit{--#2}}}}}
%%%%%%%%%%% Quote for all places except Chapter
\newcommand{\sectionquote}[2]{{\quote{\textit{``#1''}}{\textbf {\textit{--#2}}}}}

% Insert 22pt white space before roc title. \titlespacing at line 65 changes it by -22 later on.
\renewcommand*\contentsname{\hspace{0pt}Contents}


% Define section, subsection and subsubsection font size and color
\usepackage{sectsty}
\definecolor{AllportsColor}{HTML}{A02010}
\allsectionsfont{\color{AllportsColor}}

\usepackage{titlesec}
\titleformat{\section}
{\color{AllportsColor}\LARGE\bfseries}{\thesection.}{1em}{}

\titleformat{\subsection}
{\color{AllportsColor}\Large\bfseries}{\thesubsection.}{1em}{}

\titleformat{\subsubsection}
{\color{AllportsColor}\large\bfseries}{\thesubsubsection.}{1em}{}

\titleformat{\paragraph}
{\color{AllportsColor}\large\bfseries}{\theparagraph}{1em}{}

\titleformat{\subparagraph}
  {\normalfont\normalsize\bfseries}{\thesubparagraph}{1em}{}

\titleformat{\subsubparagraph}
  {\normalfont\normalsize\bfseries}{\thesubsubparagraph}{1em}{}