# How to specify B5 in tufte-book

I'm having trouble creating a working b5 layout with tufte-book. According to their documentation, this is supported:

The Tufte-LATEX classes currently only provide three paper sizes: a4, b5, and us letter.

I'm however confused because nowhere it says how we're supposed to change it to b5. I tried \documentclass[b5paper]{tufte-book} but the result has visual flaws (e.g. the title is clipped at the sides, so is chapter numbering, etc.) - it seems like it's the wrong way to do it. Also, the documentation says the b5paper option is unsupported:

The tufte-book class is based on the LATEX book document class. Therefore, you can pass any of the typical book options. There are a few options that are specific to the tufte-book document class, however.

The a4paper option will set the paper size to a4 instead of the default us letter size.

The following book class options are unsupported: 10pt, 11pt, 12pt, a5paper, b5paper, [...]

So - What's the correct way to change it to a working b5 layout?

• Hi and welcome, you can use package geometry to set the paper size. But you might need reset the margin stuff. May 2, 2015 at 22:57
• It's not a duplicate of this question, but the geometry change from here should work too: tex.stackexchange.com/questions/237704/…
– user31729
May 3, 2015 at 0:26
• The code is there to support it. Can you please provide a small example document which we can copy-paste-compile to reproduce the problems you're seeing?
– cfr
May 3, 2015 at 0:33
• Using the b5paper option is the “proper” way to do it. The note in the document about it being unsupported is a bug: I added the b5paper option later and forgot to remote it from the list of unsupported options. If you're having trouble with the b5paper option, please provide an example so we can help rectify that. Thanks! May 3, 2015 at 0:42

The b5paper option seems to work fine. Here the showframe facility from geometry (which the class loads) is used to illustrate:

\documentclass[b5paper]{tufte-book}
\title{Title}
\author{Author}
\usepackage{kantlipsum}
\geometry{showframe}
\begin{document}
\maketitle
\chapter{A chapter}
\kant[1-5]
\section{A section}
\kant[6-7]
\chapter{Another chapter}
\kant[8-12]
\end{document}