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+% \iffalse
+%%
+%% File: nccparskip.dtx Copyright (C) 2002--2004 by Alexander I. Rozhenko
+%%
+%<package>\NeedsTeXFormat{LaTeX2e}
+%<package>\ProvidesPackage{nccparskip}
+%<package> [2004/12/08 v1.1 Parskip Control Package (NCC)]
+%
+% \changes{v1.01}{2002/01/09}{This version is uploaded to CTAN}
+% \changes{v1.02}{2002/02/07}{The package is renamed to nccparskip}
+% \changes{v1.1}{2004/12/08}{Documentation was prepared}
+%
+%<*driver>
+\let\makeindex\relax
+\documentclass{ltxdoc}
+\usepackage{nccparskip}
+\SetParskip{6pt plus 1pt minus .4pt}
+\GetFileInfo{nccparskip.sty}
+\begin{document}
+\title{The \textsf{nccparskip} package\thanks{This file
+ has version number \fileversion, last
+ revised \filedate.}}
+\author{Alexander I. Rozhenko\\rozhenko@oapmg.sscc.ru}
+\date{\filedate}
+\maketitle
+\DocInput{nccparskip.dtx}
+\end{document}
+%</driver>
+% \fi
+%
+% \DescribeMacro{\SetParskip}
+% The package provides identical distance between all paragraphs except
+% section markups. It redefines control list commands and suppress
+% |\topskip|, |\partopskip|, and |\itemsep| in lists. As a result, the distance
+% between ordinary paragraphs and paragraphs prepared by lists is the same.
+% The command |\SetParskip|\marg{distance} controls this distance.
+% The default distance is
+% \begin{quote}
+% |\SetParskip{4pt plus 1pt minus .2pt}|
+% \end{quote}
+% In this document, we use |\SetParskip{6pt plus 1pt minus .4pt}|.
+% \StopEventually{}
+%
+% \section{The Implementation}
+%
+% \begin{macro}{\SetParskip}
+% Define the command and set list skips to zero length.
+% \begin{macrocode}
+%<*package>
+\newcommand*{\SetParskip}[1]{\setlength{\parskip}{#1}\parsep\parskip}
+\partopsep\z@
+\topsep\z@
+\itemsep\z@
+% \end{macrocode}
+% \end{macro}
+%
+% We suppose that list definitions were done in the similar way as
+% in standard \LaTeX\ classes. Redefine list control commands:
+% \begin{macrocode}
+\def\@listi{\leftmargin\leftmargini}
+\let\@listI\@listi
+\def\@listii{\leftmargin\leftmarginii
+ \labelwidth\leftmarginii \advance\labelwidth-\labelsep}
+\def\@listiii{\leftmargin\leftmarginiii
+ \labelwidth\leftmarginiii \advance\labelwidth-\labelsep}
+% \end{macrocode}
+%
+% Redefine the |\normalsize|, |\small|, and |\footnotesize|
+% commands to avoid the |\@listi| redefinition in them.
+% \begin{macrocode}
+\let\NCC@normalsize\normalsize
+\def\normalsize{\let\NCC@temp\@listi\NCC@normalsize\let\@listi\NCC@temp}
+\let\NCC@small\small
+\def\small{\let\NCC@temp\@listi\NCC@small\let\@listi\NCC@temp}
+\let\NCC@footnotesize\footnotesize
+\def\footnotesize{\let\NCC@temp\@listi\NCC@footnotesize\let\@listi\NCC@temp}
+% \end{macrocode}
+%
+% Finally we set defaults:
+% \begin{macrocode}
+\normalsize
+\SetParskip{4pt plus 1pt minus .2pt}
+%</package>
+% \end{macrocode}
+\endinput