When I compile the following (almost identical) two pieces of code, there is much more vertical space between both words in the first example than in the second example:
% Much space between the hellos
\documentclass{book}
\begin{document}
\Huge Hello
{\Huge Hello}
\end{document}
and
% Almost no space between the hellos
\documentclass{book}
\begin{document}
{\Huge Hello}
{\Huge Hello}
\end{document}
What is the reason for that? What difference do the curly brackets make at this point?
{\Huge Hello\par}– Manuel Feb 01 '15 at 20:05\parso that the paragraph algorithm can take into account the new\baselineskip, or leave an empty line (an implicit\par). – Werner Feb 01 '15 at 20:07\par? Every time the last character of a paragraph is a curly bracket? – user1494080 Feb 01 '15 at 20:10