\Centering 和 \centering 之间有什么区别？

Question

我的问题已经写在上面的标题上了。

---

编辑1：

我尝试在下面的原始代码中使用\Centering和删除\arraybackslash。无法编译。

\documentclass[dvips,dvipsnames,rgb]{book}

\usepackage[a4paper,margin=10mm,showframe]{geometry}
\usepackage{longtable}
\usepackage{array}
\usepackage{calc}
\usepackage{ragged2e}
\usepackage{lscape}

\newcounter{No}
\renewcommand{\theNo}{\stepcounter{No}\arabic{No}}
\newenvironment{MyTable}[4]%
{%
    \newcolumntype{A}[1]%
    {%
        >{%
            \begin{minipage}%
                {%
                    ##1\linewidth-2\tabcolsep-2\arrayrulewidth%
                }%
                \vspace{\tabcolsep}%
         }%
         c%
        <{\vspace{\tabcolsep}\end{minipage}}%
    }%
    \setcounter{No}{0}%comment out this if you want to continuous numbering for all tables.
    \begin{longtable}%
    {%
            |>{\scriptsize\Centering\theNo}A{#1}<{}%
            |>{}A{#2}<{\Centering\input{\jobname.tmp}}%
            |>{\Centering\lstinputlisting{\jobname.tmp}}A{#3}<{}%
            |>{\scriptsize\arraybackslash}A{#4}<{}%Please try to remove \arraybackslash here.
            |%
    }%
    \hline\ignorespaces%
}%
{%
    \end{longtable}%
}

\newcommand{\Comment}[1]{& & & #1\\\hline}


\usepackage{listings}
\lstset{%
language={PSTricks},
basicstyle=\ttfamily\scriptsize,%
keywordstyle=\color{blue}%,
%backgroundcolor=\color{yellow!30}%
}
\usepackage{fancyvrb}


\def\MyRow{%        
        \VerbatimEnvironment%
        \begin{VerbatimOut}{\jobname.tmp}%
}

\def\endMyRow{%
        \end{VerbatimOut}%      
}



\usepackage{pstricks,pst-node}
\newpsstyle{gridstyle}{%
gridwidth=0.4pt,%default: 0.8pt
gridcolor=Red!20,%default: black
griddots=0,%default: 0 
%
gridlabels=3pt,%default: 10pt
gridlabelcolor=Blue,%default: black
%
subgriddiv=5,%default: 5
subgridwidth=0.2pt,%default: 0.4pt
subgridcolor=Green!20,%default: gray
subgriddots=0%default: 0
}

\usepackage{lipsum}

\begin{document}
\chapter{Introduction to PSTricks}
\lipsum[1]

\section{At a glance galleries}
\lipsum[1-5]

%Landscape starts here.
\pagestyle{empty}
%\begin{landscape}
\begin{MyTable}{0.05}{.25}{0.4}{0.3}%
%=============
\begin{MyRow}
\pspicture*[showgrid](4,4)
\pnode(1,1){A}
\pnode(3,3){B}
\ncline{A}{B}
\endpspicture
\end{MyRow}
\Comment{\lipsum[1]}
%=============
\begin{MyRow}
\begin{pspicture}[showgrid](4,3)
\psframe*[linecolor=red!30](3,2)
\end{pspicture}
\end{MyRow}
\Comment{\lipsum[2]}
%=============
\begin{MyRow}
\pspicture[showgrid](4,3)
\psframe*[linecolor=green!30](3,2)
\endpspicture
\end{MyRow}
\Comment{\lipsum[3]}
%=============
\begin{MyRow}
\pspicture[showgrid](4,3)
\psframe*[linecolor=yellow!30](3,2)
\endpspicture
\end{MyRow}
\Comment{\lipsum[4]}
%=============
\begin{MyRow}
\pspicture[showgrid](4,3)
\psframe*[linecolor=Maroon!30](3,2)
\endpspicture
\end{MyRow}
\Comment{\lipsum[5]}
%=============
\end{MyTable}
%Landscape stops here.
%\end{landscape}
\pagestyle{plain}

\section{Node}
\lipsum[1-5]
\end{document}

Answer 1

\Centering允许连字符，\centering而不是，它也可以用于表格标题中，以使内容居中，而无需使用宏\arraybackslash。\RaggedRight和也一样\RaggedLeft

\documentclass[a5paper,english]{article}
\usepackage{babel}
\usepackage[originalcommands]{ragged2e}
\begin{document}

\centering this spaceframeconstruction spaceframe this spaceframeconstruction 
this spaceframeconstruction this spaceframeconstruction this spaceframeconstruction

\Centering this spaceframeconstruction spaceframe this spaceframeconstruction 
this spaceframeconstruction this spaceframeconstruction this spaceframeconstruction

\end{document}