diff --git a/lbol.tex b/lbol.tex
index 1cb837d..8901e45 100644
--- a/lbol.tex
+++ b/lbol.tex
@@ -421,6 +421,16 @@ The default for the \texttt{memoir} class is 10pt, and the other available optio
 
 The default for the the \texttt{beamer} class is 11pt, and the other available options are 8pt, 9pt, 10pt, 11pt, 12pt, 14pt, 17pt, and 20pt.
 
+You can also add the \texttt{extsizes} package, which gives you these additional document classes: \texttt{extarticle}, \texttt{extreport}, \texttt{extletter}, and \texttt{extproc}. If you use one of those document classes, you get access to other global sizes: 8pt, 9pt, 10pt, 11pt, 12pt, 14pt, 17pt, and 20pt.
+
+\bigskip
+
+\noindent{}This book contains this in the preamble:
+
+\begin{verbatim}
+\documentclass[twoside, 9pt]{extreport}
+\end{verbatim}
+
 \subsection{Local}
 
 \section{Displaying Code}