Docu update

doc/tex/cdi_cman.tex

@@ -135,7 +135,7 @@
 \end{picture}
 
 \begin{flushright}
-\large\bf{Climate Data Interface \\ Version 1.4.3 \\ February 2010}
+\large\bf{Climate Data Interface \\ Version 1.4.4 \\ April 2010}
 \end{flushright}
 
 \vfill

doc/tex/cdi_fman.tex

@@ -132,7 +132,7 @@
 \end{picture}
 
 \begin{flushright}
-\large\bf{Climate Data Interface \\ Version 1.4.3 \\ February 2010}
+\large\bf{Climate Data Interface \\ Version 1.4.4 \\ April 2010}
 \end{flushright}
 
 \vfill

doc/tex/formats.tex

@@ -82,7 +82,9 @@ The netCDF library also defines a machine-independent format for
 representing scientific data. Together, the interface, library, and 
 format support the creation, access, and sharing of scientific data.
 
-{\CDI} supports only 2D, 3D and 4D arrays and the attributes should follow the
+{\CDI} only supports the classic data model of netCDF and arrays up to 4 dimensions.
+These dimensions should only be used by the horizontal and vertical grid and the time.
+The netCDF attributes should follow the
 \href{http://ftp.unidata.ucar.edu/software/netcdf/docs/conventions.html}
      {GDT, COARDS or CF Conventions}.
 NetCDF is an external library and not part of {\CDI}. To use netCDF with