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I'm trying to understand what is the purpose of \null command. To do this I wrote the code:

\documentclass[11pt]{article}
\begin{document}

Ciao ciao \null \null \null \null ciao
ciao

\end{document}

but it seems to do nothing. When is it used alone?

Thank you in advance.

Gennaro Arguzzi
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  • Hello @PhelypeOleinik, in the answer that you indicate there is not an explanation of \null, but a tautology, and there are not examples in which there is only \null. In my question I edit the answer adding "alone". – Gennaro Arguzzi Aug 15 '18 at 15:44
  • \null does an \hbox{}, which kind of "anchors" some points. You can see the effect with a \hfill b \hfill and a \hfill b \hfill\null. Herbert's answer in the linked question describes precisely what \null is for. – Phelype Oleinik Aug 15 '18 at 15:45
  • You should try and look in the LaTeX manual for \null. You won't find it. This means that it is not a user level command. In the LaTeX kernel it is used in the definition of \verb, \textcommabelow and of \textcommaabove; also in the some internal commands and a couple of macros imported from plain TeX. – egreg Aug 15 '18 at 17:22
  • Hello @egreg, can you post the link where I can study it please? – Gennaro Arguzzi Aug 15 '18 at 17:33

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