\input dvipaste

\font\it=cmti10
\def\rm{\tenrm}

Here is some text that we have before the joined boxes.  Now we will have the
boxes joined by a line segment:

\hbox{\paste{boxes1}1%
     \vrule height 30pt depth-29pt width1in 
     \paste{boxes2}2}
And this is the text that we have after it.

Here is just a lot of stuff \it that we will continue to put in italics,
for the rest of the file, in fact.

\vfil\eject


This is some more text.


\hbox{\paste{boxes1}4%
     \vrule height 30pt depth-29pt width1in 
     \paste{boxes2}1}
And this is the text that we have after it.

\vfil\eject

\rm Now we are back to roman type.

\hbox{\paste{boxes1}3%
     \vrule height 30pt depth-29pt width1in 
     \paste{boxes1}4}
And this is the text that we have after it.

\bye