\documentclass[a4paper,twoside, symmetric,justified,notoc, nobib]{tufte-book}
\titleclass{\subsubsection}{straight}
\begin{document}
\frontmatter
\pagenumbering{roman}
\setcounter{secnumdepth}{-1}
\mainmatter
\section{CHAPTER 1}
\subsection{Introduction}
\subsubsection{An additional sub-heading within introduction }
\end{document}
Using the tufte-book
class, I've been trying to define \subsubheading
as I'm finding that \subheading
alone isn't giving me enough flexibility for nesting content.
I found this question here on tex.SE which appears to want a similar thing, but in my case I'm not interested in the additional formatting (I don't wish to define the formatting from scratch, but rather just inherit formatting).
My aim is to just copy the formatting for \subsection
and use this for \subsubsection
.
My solution to this was to define a new titleclass
such that \titleclass{\subsubsection}{straight}
(this was suggested in several other posts and is covered in the LaTeX companion as away of introducing new sections/titles), but what I can't do is make it format correctly. Whilst in the ToC everything looks fine, on the page, the {straight}
command gives bold, upright text.
Is there a way of making this new title class inherit the style of the old \subsection
?