%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-6-3 on page I-240 in "Customizing todos".
%%
%% 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{202.0pt}


\sloppy

\setlength\marginparwidth{70pt}
\addtolength\textwidth{-\marginparwidth} % make room on the page
\addtolength\textwidth{-2\marginparsep}  % in the book example

%StartShownPreambleCommands
\usepackage[loadshadowlibrary]{todonotes}
\setuptodonotes{shadow,backgroundcolor=white,
   bordercolor=blue,linecolor=black,
   textcolor=gray,tickmarkheight=5pt}
%StopShownPreambleCommands

\begin{document}
A\todo[fancyline]{A note with a fancy line}
bit of paragraph text. Observe
\todo[noshadow]{Second} how all the
\todo[noline,textcolor=blue]{Third (no line)}
spa\todo{Fourth}ces around \verb|\todo|
commands are handled.
\end{document}