diff --git a/cpdfmanual.pdf b/cpdfmanual.pdf
index 1aaaec5..6c3e0ad 100644
Binary files a/cpdfmanual.pdf and b/cpdfmanual.pdf differ
diff --git a/cpdfmanual.tex b/cpdfmanual.tex
index d797ff4..0c4230e 100644
--- a/cpdfmanual.tex
+++ b/cpdfmanual.tex
@@ -5989,7 +5989,7 @@ its Contents entry.",
     \noindent\small\verb!cpdf -verify "PDF/UA-1(matterhorn)" -verify-single "28-012" in.pdf!
   \end{framed}
 
-\noindent Presently, Matterhorn tests 31-001--016,018,030 are unimplemented. Matterhorn tests 31-027,10-001,11-001--005 are partially implemented. 
+\noindent Presently, Matterhorn tests 31-001--016,018,030 are unimplemented. Matterhorn tests 31-027,10-001,11-001--005 are partially implemented. All others are implemented.
 
 \section{PDF/UA compliance markers}
 
@@ -6013,7 +6013,7 @@ Once we are sure a file complies to PDF/UA, in terms of both machine and human c
 
 \section{Merging and splitting PDF/UA files}
 
-\noindent The \texttt{-process-struct-trees} option should always be used in conjunction with any splitting or merging command to preserve PDF/UA compliance. Details are given in chapter \ref{chap:2}.
+\noindent The \texttt{-process-struct-trees} option should always be used in conjunction with any splitting or merging command to preserve PDF/UA compliance. Sometimes \texttt{-subformat} may be required too. Details are given in chapter \ref{chap:2}.
 
 \section{Creating new PDF/UA files}