diff --git a/cpdfmanual.pdf b/cpdfmanual.pdf
index 445a35e..7a718e9 100644
Binary files a/cpdfmanual.pdf and b/cpdfmanual.pdf differ
diff --git a/cpdfmanual.tex b/cpdfmanual.tex
index 7c718e0..31cf424 100644
--- a/cpdfmanual.tex
+++ b/cpdfmanual.tex
@@ -2553,7 +2553,7 @@ recommended when file size is the sole consideration.
 
 \label{listmisingfonts}\clearpage\pagestyle{empty}
 
-\chapter{PDF and JSON}\label{chap:15}\pagestyle{fancy}
+\chapter{PDF and JSON}\label{chap:15}\pagestyle{fancy}\index{JSON}
   {\small\begin{framed}
   \noindent\verb!cpdf in.pdf -output-json -o out.json!\\
   \noindent\verb!     [-output-json-parse-content-streams]!\\
@@ -2594,7 +2594,7 @@ Output PDF as JSON data. Each object is written under its object number. The obj
 \noindent The option \texttt{-output-json-no-stream-data} simply elides the stream data instead, leading to much smaller JSON files. 
 
 \clearpage\pagestyle{empty}
-\chapter{Optional Content Groups}\label{chap:16}\pagestyle{fancy}
+\chapter{Optional Content Groups}\label{chap:16}\pagestyle{fancy}\index{Optional Content Group}
 
   {\small\begin{framed}
   \noindent\verb!cpdf -ocg-list in.pdf!