我想获得以下输出：
Bla, bla, here are the actions to do.
Action 1
Bla, bla, bla...
Action 2
Bla, bla, bla...
Action 3
Bla, bla, bla...
When the preceding actions have been done, you must do the following things.
Thing 1
Bla, bla, bla...
Thing 2
Bla, bla, bla...
Thing 3
Bla, bla, bla...
LaTeX 代码可能如下所示：
Bla, bla, here are the actions to do.
\begin[Action]{step}
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\end{step}
When the preceding actions have been done, you must do the following things.
\begin[Thing]{step}
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\end{step}
答案1
您可以使用\newenvironment它来逐步创建环境steps：
\documentclass{article}
\usepackage{enumitem}
\newenvironment{steps}[1]{\begin{enumerate}[label=#1 \arabic*]}{\end{enumerate}}
\makeatletter% http://tex.stackexchange.com/questions/29517/forcing-new-line-after-item-number-in-enumerate-environment/29518#29518
\def\step{%
\@ifnextchar[ \@step{\@noitemargtrue\@step[\@itemlabel]}}
\def\@step[#1]{\item[#1]\mbox{}\\\hspace*{\dimexpr-\labelwidth-\labelsep}}
\makeatother
\begin{document}
\begin{steps}{Action}
\step Bla, bla, bla...
\step Bla, bla, bla...
\step Bla, bla, bla...
\end{steps}
\begin{steps}{Thing}
\step Bla, bla, bla...
\step Bla, bla, bla...
\step Bla, bla, bla...
\end{steps}
\end{document}
为了进一步完善此方法，您可以使用 LaTeX3 函数 声明环境\DeclareDocumentEnvironment。它允许您指定可选参数并为其设置默认值。以下声明了一个新环境，steps如果没有给出任何参数，则默认为标签“Steps”：
\documentclass{article}
\usepackage{enumitem}
\usepackage{xparse}
\DeclareDocumentEnvironment{steps}%
{O{Step}}% If no argument is given the label defaults to 'Step'
{\begin{enumerate}[label=#1 \arabic*]}%
{\end{enumerate}}
\makeatletter% http://tex.stackexchange.com/questions/29517/forcing-new-line-after-item-number-in-enumerate-environment/29518#29518
\def\step{%
\@ifnextchar[ \@step{\@noitemargtrue\@step[\@itemlabel]}}
\def\@step[#1]{\item[#1]\mbox{}\\\hspace*{\dimexpr-\labelwidth-\labelsep}}
\makeatother
\begin{document}
\begin{steps}
\step Bla, bla, bla...
\step Bla, bla, bla...
\step Bla, bla, bla...
\end{steps}
\begin{steps}[Action]
\step Bla, bla, bla...
\step Bla, bla, bla...
\step Bla, bla, bla...
\end{steps}
\begin{steps}[Thing]
\step Bla, bla, bla...
\step Bla, bla, bla...
\step Bla, bla, bla...
\end{steps}
\end{document}
答案2
使用包裹enumitem为每个创建标签行动订单项：
\begin{enumerate}[label=Action \arabic*,align=left, leftmargin=2.0cm]
由于您想要在列表开始后添加一个新行，因此我使用了以下解决方案在枚举环境中，强制在项目编号后换行界定\step：
\makeatletter
\def\step{%
\@ifnextchar[ \@myitem{\@noitemargtrue\@myitem[\@itemlabel]}}
\def\@myitem[#1]{\item[#1]\mbox{}\\}
\makeatother
使用这些可获得所需的结果：
您还可以为每个部分使用自定义环境：
\documentclass{article}
\usepackage{enumitem}
% Since you want a blank line after the begin of a list
% https://tex.stackexchange.com/questions/29517/forcing-new-line-after-item-number-in-enumerate-environment
\makeatletter
\def\step{%
\@ifnextchar[ \@myitem{\@noitemargtrue\@myitem[\@itemlabel]}}
\def\@myitem[#1]{\item[#1]\mbox{}\\}
\makeatother
% Custom environments
\newenvironment{Action}{%
\begin{enumerate}[label=Action \arabic*,align=left, leftmargin=2.0cm]%
}{
\end{enumerate}%
}
\newenvironment{Thing}{%
\begin{enumerate}[label=Thing \arabic*,align=left, leftmargin=2.0cm]%
}{
\end{enumerate}%
}
\begin{document}
\noindent
Bla, bla, here are the actions to do.
\begin{Action}
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\end{Action}
\noindent
When the preceding actions have been done, you must do the following things.
\begin{Thing}
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\step
Bla, bla, bla...
\end{Thing}
\end{document}
答案3
\usepackage{enumerate}
\begin{enumerate}[{Action}~1:]
\item Blah
\item Blah blah
\end{enumerate}
\begin{enumerate}[{Step}~1:]
\item Blah
\item Blah blah
\end{enumerate}