LaTeX sin adivinar.

\documentclass{article}
\usepackage{fontspec}
\usepackage{polyglossia}

\setmainlanguage{english}
\setotherlanguage{arabic}
\setmainfont{Noto Serif}
\newfontfamily\arabicfont[Script=Arabic]{Noto Naskh Arabic}

\begin{document}

\section{Multilingual Typesetting}
XeLaTeX handles Unicode natively, enabling seamless
mixing of scripts and writing systems. The line
below is Arabic, set right to left.

\begin{Arabic}
مرحباً بالعالم
\end{Arabic}

Custom OpenType features and any system font are
available via the \texttt{fontspec} package.

\end{document}

\documentclass{article}
\usepackage{luacode, booktabs}

\begin{document}

\section{Dynamic Table via Lua}

\begin{luacode}
  local rows = {
    {"Product", "Q1",  "Q2",  "Q3" },
    {"Alpha",   "120", "145", "162"},
    {"Beta",    "98",  "110", "134"},
    {"Gamma",   "55",  "72",  "89" },
  }
  tex.print("\\begin{tabular}{lrrr}")
  tex.print("\\toprule")
  for i, row in ipairs(rows) do
    tex.print(table.concat(row, " & ") .. " \\\\")
    if i == 1 then tex.print("\\midrule") end
  end
  tex.print("\\bottomrule")
  tex.print("\\end{tabular}")
\end{luacode}

\end{document}

\documentclass{article}
\usepackage[backend=biber, style=apa]{biblatex}
\usepackage{hyperref}
\addbibresource{references.bib}

\begin{document}

\section{Introduction}
The work by~\cite{knuth1984} established the principles
of typographic quality that \LaTeX{} implements.
Later, \cite{lamport1994} formalized the macro layer
now universal in academic publishing.

\section{Results}
\label{sec:results}
Cross-references like \autoref{sec:results} resolve
correctly — latexmk reruns as many times as needed,
handling BibTeX, indices, and \texttt{hyperref} links.

\printbibliography

\end{document}