Thanks for your answer: I had to use dvips option.
I've modified the text, but only on the two editions, because I can't remember where I put the .tex files of the beamer presentation. If I don't find them, I'll anyway put an erratum.
Anyway, you can notice it is a really basical presentation, because it was destined to people who had no idea of what LaTeX was.
latexforever wrote:And how can I produce 2-up or 4-up transparents with the Slides class?
(I can do it with Seminar, but I know it is possible for the Slides class.)[...]
If you know that it is possible, just do it. I don't know how. The slides class from standard LaTeX is very restricted. Even overlays are problematic. I suggest to change to another class. But the modern classes are made more for beamer presentations than for presentations with foils.
latexforever wrote:And how can I produce 2-up or 4-up transparents with the Slides class?
(I can do it with Seminar, but I know it is possible for the Slides class.)[...]
If you know that it is possible, just do it. I don't know how. The slides class from standard LaTeX is very restricted. Even overlays are problematic. I suggest to change to another class. But the modern classes are made more for beamer presentations than for presentations with foils.
I would consider twoup-gen (2up) outdated and the usage of twoupltx (twoup) too complicated. I guess the best would be to compile the slides to PDF as usual and then rearrange them with the pdfpages package by including them into another document.