%%
%% The LaTeX Companion, 3ed
%%
%% Example 4-3-1 on page I-334 in "lineno --- Numbering lines of text".
%%
%% 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{207.0pt}

\addtolength\textwidth{-30pt}

%StartShownPreambleCommands
\usepackage{lineno}
\newcommand\sample{ Some text to
       experiment with line numbering.\par}
%StopShownPreambleCommands

\begin{document}
No line numbers here.\sample
\linenumbers
Here we get line numbers.\sample
And here too.\sample
\linenumbers[-10]
Restart with a negative number and
continue for a few lines.\sample
\nolinenumbers
And once more no numbers.\sample
\end{document}