> but I still would appreciate to get some hint how to tune
> the inter-column spacing.
>From "Tbl -- A Program to Format Tables":
Space between columns -- A number may follow the key-letter.
This indicates the amount of separation between this
column and the next column. The number normally specifies
the separation in ens. If the "expand" option is used,
then these numbers are multiplied by a constant such
that the table is as wide as the current line length. The
default column separation number is 3. If the separation
is changed the worst case (largest space requested)
governs.
