% na de volgende TEX code wordt tekst in 2 kolommen gezet
% maak colwidth iets kleiner dan de helft van hsize
\newdimen \ohsize  \newdimen \ovsize
\newdimen \colwidth  \colwidth 80 true mm
\output {\global \setbox0 \vbox {\unvbox255} }
\eject
\ohsize \hsize  \ovsize \vsize
\hsize \colwidth
\multiply \vsize by 2 \advance \vsize by 5 mm
\output {
 \dimen0 \ovsize  \advance \dimen0 by -\ht0
 \setbox1 \vsplit255 to \dimen0
 \setbox2 \vsplit255 to \dimen0
 \setbox9 \vbox {\unvbox255}
 \setbox255 \vbox to \ovsize {
  \unvbox0
  \hbox to \ohsize {\box1 \hfil \box2} }
 \hsize \ohsize	 \vsize \ovsize
 \plainoutput
 \unvbox9 }

