I want to mave minimal inter-column spacing in the following construct, or be able to specify a maximum width for the full populated reactangular area.
For example the results of the below source have inter-column spacing of about 5 cm.
Regards
----------------- minimum example (How to specify an overall width or the inter-column spacing.
\starttext
\startitemize[none,columns,three,packed,joinedup,8*serried,][width=0mm]
\item A \item B \item C
\item D \item E \item F
\item G \item H \item I
\stopitemize
\stoptext