diff --git a/ChangeLog b/ChangeLog
index 62c8ef7606d6d72561ca2c2b0fd2a288191b357e..29fd1b9b4c018589f738850f986b1ac468ccb78d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2022-10-06  Uwe Schulzweida
+
+	* Version 2.1.0 released
+
 2022-08-12  Uwe Schulzweida
 
 	* added CDI_KEY_CHUNKTYPE and CDI_KEY_CHUNKSIZE
diff --git a/doc/tex/dataset.tex b/doc/tex/dataset.tex
index a0cef17c1fcbbca6801bed77a452ab04f99c3c80..cedca3be9976e2e42a915f2b920ea48fd3da555d 100644
--- a/doc/tex/dataset.tex
+++ b/doc/tex/dataset.tex
@@ -12,6 +12,7 @@ with one of the following predefined file format types:
 \item[{\large\texttt{CDI\_FILETYPE\_NC4}}]   File type NetCDF-4 (HDF5)
 \item[{\large\texttt{CDI\_FILETYPE\_NC4C}}]  File type NetCDF-4 classic
 \item[{\large\texttt{CDI\_FILETYPE\_NC5}}]   File type NetCDF version 5 (64-bit data)
+\item[{\large\texttt{CDI\_FILETYPE\_NCZARR}}]   File type NetCDF NCZarr
 \item[{\large\texttt{CDI\_FILETYPE\_SRV}}]   File type SERVICE
 \item[{\large\texttt{CDI\_FILETYPE\_EXT}}]   File type EXTRA
 \item[{\large\texttt{CDI\_FILETYPE\_IEG}}]   File type IEG
diff --git a/doc/tex/keys.tex b/doc/tex/keys.tex
index 6e54ecd26ed14a592eee52e067520ec5d88b8405..cc56e1f0bc9d1c31bf1e70763e391f6d38dae3ee 100644
--- a/doc/tex/keys.tex
+++ b/doc/tex/keys.tex
@@ -10,10 +10,10 @@ Use the variable ID or one of the following identifiers for the coordinates:
 
 \vspace*{3mm}
 \hspace*{8mm}\begin{minipage}{15cm}
-\begin{deflist}{\large\texttt{CDI\_KEY\_GLOBAL \ \ }}
-\item[\large\texttt{CDI\_KEY\_XAXIS}]   X-axis ID
-\item[\large\texttt{CDI\_KEY\_YAXIS}]   Y-axis ID 
-\item[\large\texttt{CDI\_KEY\_GLOBAL}]   Global Z-axis
+\begin{deflist}{\large\texttt{CDI\_GLOBAL \ \ }}
+\item[\large\texttt{CDI\_XAXIS}]   X-axis ID
+\item[\large\texttt{CDI\_YAXIS}]   Y-axis ID 
+\item[\large\texttt{CDI\_GLOBAL}]   Global Z-axis
 \end{deflist}
 \end{minipage}
 \vspace*{4mm}
@@ -48,12 +48,22 @@ The following key attributes are available:
 \item[\large\texttt{CDI\_KEY\_NUMBEROFGRIDINREFERENCE}]   GRIB2 numberOfGridInReference
 \item[\large\texttt{CDI\_KEY\_NUMBEROFVGRIDUSED}]   GRIB2 numberOfVGridUsed
 \item[\large\texttt{CDI\_KEY\_NLEV}]   GRIB2 nlev
+\item[\large\texttt{CDI\_KEY\_CHUNKTYPE}]   ChunkType: CDI\_CHUNK\_AUTO/CDI\_CHUNK\_GRID/CDI\_CHUNK\_LINES
+\item[\large\texttt{CDI\_KEY\_CHUNKSIZE}]   ChunkSize
 \end{deflist}
 \end{minipage}
 \vspace*{4mm}
 
 \textbf{Floating point keys}
 
+\vspace*{3mm}
+\hspace*{8mm}\begin{minipage}{15cm}
+\begin{deflist}{\large\texttt{CDI\_KEY\_MISSVAL \ \ }}
+\item[\large\texttt{CDI\_KEY\_MISSVAL}]   Missing value
+\end{deflist}
+\end{minipage}
+\vspace*{4mm}
+
 \textbf{Byte array keys}
 
 \vspace*{3mm}