%%
%% The LaTeX Companion, 3ed
%%
%% Example A-2-9 on page II-655 in "Vertical space".
%%
%% 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

%StopShownPreambleCommands

\begin{document}
The \vspace{3mm}use of a \verb!\vspace! command
inside a paragraph is perhaps a bit surprising.

\vspace{\baselineskip}

Between paragraphs, adjusting the spacing is
somewhat more useful, and it allows control
of the white space before and after displayed
material.
\end{document}