[OS X TeX] pagebreak within a paragraph in a twocolumn setup

[Reich Ingo]

Am 19.04.2008 um 18:49 schrieb Alan Munn:
> At 11:33 AM +0200 4/19/08, Reich Ingo wrote:
>> Hi everybody,
>> I'd like to set text in two essentially independent columns:
>
> [snip]
>
>> 1. Suppose there is a long paragraph in one of the columns which is  
>> too long to fit on the page. Then, what I'd like to have, is an  
>> automatic pagebreak *within* the paragraph, i.e. (i) fill the page  
>> with the first part of the paragraph, then continue on the next  
>> page with the rest of the paragraph in twocolumn mode.
>>
>> 2. I'd like to have different background colors for the two colums  
>> (also extending across the page).
>>
>
> Hi Ingo,
>
> The parallel package (or better the pdfcolparallel package (part of  
> the oberdiek bundle)) will do the two column stuff that you want, if  
> I understand your request correctly.
>
> Different backgrounds, however, will be much more of a problem.  
> Usually you can do this with a single column using the shaded  
> environment from framed.sty.  Unfortunately, the shaded environment  
> doesn't play nicely with parallel. If simply having different colour  
> text for the two columns would work, that would be easy:
>
> \documentclass{article}
> \usepackage[margin=1in]{geometry}
> \usepackage{pdfcolparallel, lipsum, xcolor}
> \begin{document}
> \begin{Parallel}{3in}{2in}
> \ParallelLText{\color{red}\lipsum}
> \ParallelRText{\lipsum}
> \end{Parallel}
> \end{document}
>
> Alan
>
>

Hi Alan,
yes, this is exactly what I was looking for, at least as far as point  
1. is concerned. As for 2., I actually meant to have different colour  
backgrounds for the respective columns ("colour blocks"), not  
differently coloured text.  So this  problem remains. Any suggestions?
Herzliche Grüße nach Michigan,
Ingo