diff --git a/Changes b/Changes
index db0c467..a106f85 100644
--- a/Changes
+++ b/Changes
@@ -28,7 +28,7 @@ o Report number of annotations in -page-info
 o Specify image based only on file extension
 o -squeeze updates old compression methods
 o Show page size summary in -info
-o Add -no-merge-struct-trees to prevent merging of structure trees
+o Add -no-process-struct-trees to prevent merging of structure trees
 
 Fixes:
 
diff --git a/cpdfmanual.pdf b/cpdfmanual.pdf
index ba878a9..557dcc0 100644
Binary files a/cpdfmanual.pdf and b/cpdfmanual.pdf differ
diff --git a/cpdfmanual.tex b/cpdfmanual.tex
index f876c0a..9a23aaf 100644
--- a/cpdfmanual.tex
+++ b/cpdfmanual.tex
@@ -4474,14 +4474,14 @@ A basic text to PDF convertor is included in \texttt{cpdf}. It takes a UTF8 text
 
 Simple facilities for making PDFs from PNG and JPEG images are included in \texttt{cpdf}. The resulting file can be written out, or used for further operations.
 
-For PNG files, the file must be 24bit RGB with no transparency and no interlacing:
+For PNG files, the file must have no transparency and no interlacing, and must not be palletised:
 
 \begin{framed}
  \noindent\small\verb?cpdf -png image.png -o out.pdf?\\
- \noindent\small\verb?cpdf -image.png AND -add-text "My Image" -o out.pdf?
+ \noindent\small\verb?cpdf image.png AND -add-text "My Image" -o out.pdf?
 \end{framed}
 
-\noindent Notice that the \texttt{-png} can be omitted if your file has a standard file extension. Almost any JPEG file may be used:
+\noindent Notice that the \texttt{-png} can be omitted if your file has a standard file extension. Almost any JPEG file may be used with \texttt{-jpeg} or again, with a standard extension:
 
 \begin{framed}
  \noindent\small\verb?cpdf -jpeg image.jpg -o out.pdf?