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I want to put an abstract at the beginning of each chapter. I have cooked up a command in that aim, but it looks neither economic, nor robust (sometimes it is shifted to the right). How to improve this command?

My command is:

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Never set \leftskip and \rightskip in LaTeX, they are TeX primitives which should always be set through a list environment such as quote (which is probably what you want here) – David Carlisle Apr 5 '14 at 11:00
up vote 9 down vote accepted

You don't give much indication of the desired layout but perhaps


\leftskip and \rightskip are TeX primitives which should not be set directly in LaTeX. (The quote environment use the LaTeX list mechanism to set these in a safe way).

The full definition of quote in the standard classes is


Which says to implicitly indent the left by a default amount and indent the right by the same as the left. So if as you note in comments that tou want a different indent then use chapastractenv instead of quote and define it as


then if you want a command form rather than using an environment

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In fact, I want smaller margins that in the quote environment. – Lionel Darondeau Apr 5 '14 at 11:10
@LionelDarondeau see updated answer – David Carlisle Apr 5 '14 at 11:27

Thank you for your help, I think I will modify the quotation environment like that:

\newenvironment{chapstract}{\list{}{ % 
\leftmargin1pc \listparindent\normalparindent 
\rightmargin\leftmargin \parsep\z@ \@plus\p@}% 

It is not more economic but it seems to be more correct.

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