[Tex/LaTex] find \item definition to redefine it

lists

I want to modify the parameters used by \item in a {list} environment. Where can the original definition be found in my LaTeX distribution to copy and modify?

Best Answer

It is not recommend to modify the definition of \item (actually, the definition of your list environment) if you are not TeXpert. There are lot of length parameters that can be customized by non-experienced user. They are listed below.

(borrowed from Lamport's book)

Here is an example how to reset vertical space between paragraph in all items:

\begin{itemize}
\setlength{\parskip}{3pt plus 3pt minus 1pt}
\item 
1st paragraph

2nd paragraph

...
\end{itemize}

Note that vertical lengths are stretchable; in this example \parskip is normally will be 3 points (pt) but can be as small as 2 pt and as large as 6 pt (or even bigger, I am not sure). If

\setlength{\parskip}{3pt plus 3pt minus 1pt}

is put inside the invironment, it acts only on that particular occurence of the environment. You may want to put it also outside:

\setlength{\parskip}{3pt plus 3pt minus 1pt}

...

\begin{itemize}
\item 
1st paragraph

2nd paragraph

...
\end{itemize}
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