如何使用 scrbook（不带 titlesec）将章节编号和章节移至页边距

Question

我需要移动章节编号和章节标题，如下图所示。

平均能量损失

\documentclass[12pt,twoside=semi]{scrbook}
\usepackage{blindtext}

\usepackage[showframe]{geometry}
\geometry{paperwidth=170mm, paperheight=240mm, left=42pt, top=40pt, textwidth=280pt, marginparsep=20pt, marginparwidth=100pt, textheight=560pt, footskip=40pt}

\begin{document}

\blinddocument

\end{document}

Answer 1

也许你可以使用

\addtokomafont{section}{\addtolength\leftskip{-40pt}}

但是您示例中的左边距只有 42pt。

\documentclass[12pt,twoside=semi,headings=small]{scrbook}
\usepackage{blindtext}
\usepackage[showframe]{geometry}
\geometry{paperwidth=170mm, paperheight=240mm,
  left=42pt, top=40pt, textwidth=280pt,
  marginparsep=20pt, marginparwidth=100pt,
  textheight=560pt, footskip=40pt}

\addtokomafont{section}{\addtolength\leftskip{-40pt}}

\begin{document}
\blinddocument
\end{document}