obsolete

##  <#GAPDoc Label="ExportMatrix">
##  <ManSection>
##  <Func Arg="M" Name="ExportMatrix"/>
##  <Returns>a dense matrix</Returns>
##  <Description>
##  This returns the dense version of the matrix <A>M</A>.
##  Note that this is not a "standard" tool but neccessary
##  because of the new data type.
##  </Description>
##  </ManSection>
##  <#/GAPDoc>
               ExportMatrix :=
                 function( M )
                   return ConvertSparseMatrixToMatrix( M );
                 end,