latex opening 

the latex opening is

\documentclassusenames,dvipsnames{article}
\usepackageutf8{inputenc}
\usepackage{amsmath, amsfonts, xcolor, amssymb, amsthm, babel, empheq, graphicx,ragged2e,hyperref,enumitem, yfonts}
\tolerance=1
\emergencystretch=\maxdimen
\hyphenpenalty=10000
\hbadness=10000
\usepackagemargin=1cm,top=1.5cm,bottom=1.5cm{geometry}
\usepackage{tikz}
\usetikzlibrary{calc,angles,positioning,intersections,quotes,decorations.markings}
\newcommand{\dlim}{\displaystyle \lim}
\newcommand{\dint}{\displaystyle \int}
\newcommand{\doint}{\displaystyle \oint}
\newcommand{\dilog}{\operatorname{Li}_2}
\newcommand{\cis}1{\operatorname{cis}\left({#1}\right)}
\newcommand{\dprod}{\displaystyle\prod}
\newcommand{\dsum}{\displaystyle \sum}
\newcommand{\cycsum}{\sum_{\text{cyc}}}
\newcommand{\symsum}{\sum_{\text{sym}}}
\newcommand{\dcycsum}{\displaystyle\cycsum}
\newcommand{\dsymsum}{\displaystyle\symsum}
\newcommand{\cycprod}{\prod_{\text{cyc}}}
\newcommand{\symprod}{\prod_{\text{sym}}}
\newcommand{\dcycprod}{\displaystyle\cycprod}
\newcommand{\dsymprod}{\displaystyle\symprod}
\newcommand{\cbrt}{\sqrt3}
\renewcommand{\r}{\\\\}
\renewcommand{\vec}{\mathbf}
\renewcommand{\geq}{\geqslant}
\renewcommand{\leq}{\leqslant}
\renewcommand{\bar}{\overline}
\newenvironment{amatrix}1{%

\left(\begin{array}{@{}*{#1}{c}|c@{}}
}{%

\end{array}\right)
}
\RaggedRight

"Well, you see, in order to latex successfully you need to fucking memorise the latex opening which is annoying as shit"

latex opening by Dexatric January 23, 2021