🚀 go-pugleaf

I've just installed slitex, and it seems to work for black and white,
but when I try to produce colour layers the layers don't match.  The
gaps are much too small for the text from the other layers.  In fact,
it looks as if the invisible characters have zero width, and only the
interword spacing is there.

Is this a known problem?  Am I doing something stupid?  Send me mail,
and I'll summarise.

Relevant facts:

  TeX, C Version 2.9
  SliTeX Version 2.09 - Release 10 November 86
  dvi2ps VERSION "2.10gf"
  Apple laserwriter

And here's the code:

/tmp/root.tex:

\documentstyle{slides}
\begin{document}
\colors{red,black}
\colorslides{slide}
\end{document}

/tmp/slide.tex:

\black
\begin{slide}{red,black}
Here is {\red some red text,} some black text,
{\red some more red text,} and another bit of
black text.
\end{slide}

Thanks in advance,
  Richard

-- 
Richard Tobin,                       JANET: R.Tobin@uk.ac.ed             
AI Applications Institute,           ARPA:  R.Tobin%uk.ac.ed@nsfnet-relay.ac.uk
Edinburgh University.                UUCP:  ...!ukc!ed.ac.uk!R.Tobin