Last filter in PS chain?

[Remco Poelstra]

Helge Blischke wrote:
> No, if you don't have access to that box (or a similar one), you are
> lost.
> But if the duplex setting of *your* PostScript file foces the banner
> sheet
> to be printed in duplex mode as well (what is crazy; banner pages should
> - by 
> definition - be independent of the rest of the job), you could insert a
> single showpage just at the beginning of your first page.

That's exactly what I want to do, but I want to automate that, because 
sometimes I don't print in duplex mode.
Seems that the solution of Blomdell is a good one.

Remco