如何放置部分标题（如章节标题）在book班上？
梅威瑟：
\documentclass{book}
\usepackage{lipsum}
\usepackage{titlesec}
\titleclass{\part}{top}
\titleformat{\part}[display]{}
{\huge\bfseries Part \thepart}
{8pt}
{\Huge\scshape}
\pagestyle{plain}
\begin{document}
\part{This is a part}
This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text.
\newpage
\lipsum[1-10]
\end{document}
但是，间距太大——部分标题没有出现在页面顶部，而是出现在（靠近）中心。
这就是我所寻找的，以最肮脏的方式编码：
\documentclass{book}
\usepackage{lipsum}
\pagestyle{plain}
\begin{document}
\noindent{\huge\bfseries Part 1}\\[8pt]
{\Huge\scshape This is a part}\par\vspace{2cm}
This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text.
\newpage
\lipsum[1-10]
\end{document}
我看过如何在 \part 后写入文本例如，但所有的答案都不能帮助我。我必须使用book，并且我的描述可能包含两个或更多短段落，甚至包含一些图形，因此宏不适用。
答案1
你可以加\titlespacing。
\documentclass{book}
\usepackage{lipsum}
\usepackage{showframe}% MWE only
\usepackage{titlesec}
\titleclass{\part}{top}
\titleformat{\part}[display]{\pagestyle{plain}\hrule height0pt}% to prevent extra blank line
{\huge\bfseries Part \thepart}
{0pt}% distance between Part and title (plus normal spacing)
{\Huge\scshape}
\titlespacing*{\part}{0pt}{-\topskip}{2cm}% distance before text
\begin{document}
\part{This is a part}
This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text. This is a short description text.
\newpage
\lipsum[1-10]
\end{document}