%%
%% The LaTeX Companion, 3ed
%%
%% Example 9-6-7 on page I-713 in "Interfacing with core {\protect \sffamily  NFSS}{} commands".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}

  %!TEX program = lualatex

  \setlength\parindent{0pt}

  \sloppy

%StartShownPreambleCommands
\usepackage{fontspec}
\setmainfont{EB Garamond}
  [ FontFace={m}{sw}  {Font=EBGaramond-Italic.otf,Style=Swash},
    FontFace={m}{scsw}{Font=EBGaramond-Italic.otf,
                                Letters=SmallCaps,Style=Swash} ]
%StopShownPreambleCommands

\begin{document}
\textit{Show A Few EB Garamond Italic Letters: \textsc{Spqr}}.

\textsw{Show A Few EB Garamond Swash Letters: \textsc{Spqr}}.
\end{document}