%%
%% The LaTeX Companion, 3ed
%%
%% Example 6-1-6 on page I-435 in "tabto --- An alternative way to tab stops".
%%
%% 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{183.0pt}

%StartShownPreambleCommands
\usepackage{tabto}
%StopShownPreambleCommands

\begin{document}
\NumTabs{4}
Start\tab T1\tab T2\tab T3\tab T0b \tab\tab T3b

\TabPositions{.25\linewidth,.5\linewidth}
Start\tab T1\tab T2 (last one in line)\tab T0b
(get past T1b)\tab T2b \tabto*{.42\linewidth}T?
\end{document}