Hans Hagen wrote:
also, when collecting and flushing pieces of content, spacing is a tricky business (watch closely to presentations made quick and you'll notice those side effects)
That is why ppower4 is such a nice alternative: It inserts just some pdf comments and otherwise leaves the typesetting alone. Then a postprocessor takes the pdf file and creates a new one, with everything left at its original position, but appearing only on the pages (a slide is built up by jumping to the next page) where it is supposed to appear.
the content, presentation and audience, which in practice means that i don't use general solutions (apart from the fact that i don't like
Well, a general solution for the isolated requiement of “having considered content, audience and everything, I want my text/gfx/ whatever appear step-wise“ would be a good thing, imho. And I did in the past also use things like removing the full stop when stepping from This implies A. to This implies A and therefore, B. I have also seen a presentation where the speaker sketched a proof of some lemma, then generelized it and simply exchanged the relevant words in the lemma. The new words were shorter, so there was some space to the left and right of them and they had some contrast color. The effect was not just “cool” and “I don't think Powerpoint could do that” – what's more important is that this was by far the clearest way of getting the message across. Is there a way of having \installprogram for only for after the *last* run? (I don't think there could be a systemmode for the last run, but texexec knows it has done the last run, so there might be some file.tui line doing this kind of magic.) Christopher