# [tex-eplain] adjusting the space between multiple columns

Thu Jan 11 19:42:50 CET 2007

On Thu, Jan 11, 2007 at 11:40:51AM -0500, John Gabriele wrote:
> \gutter = 30 mm
>
> but that doesn't seem to do anything.

Set it _before_ \doublecolumns, otherwise it has no effect -- by the
time you change it, \doublecolumns has already used the old value to
compute column widths.

> \def\gutterbox{\vbox to \dimen0{\vfil\hbox{\hskip 10 mm}\vfil}}
>
> it seems to make the space between columns larger, but also makes a
> dark black vertical line on the far right side that cuts off the
> column on the right.

The black line is the overfull box marker.  Your 10mm-wide gutter box
does not fit in the default gutter of 2 picas.

Hope this helps,
Oleg