> > Also the most salient point of those previews (at least that has > turned out to be for preview-latex) is to integrate the look of the > final output into the source, so as to render things more readable. > Since the elements themselves are lacking fine structure, for editing > you need the original output. That would mean that the current > paragraph being edited would not be subject to previews, but those > around the current one would: certainly an interesting experiment, but > I am not sure that it would warrant implementing at first, at least, > if what I understood from Andre is more or less correct, the display > code outside of the math editor is quite likely to change quite a bit > in the near future.
The math editor already gives a good approximation on hour your formulae will look, so the need for a preview is much less needed than in emacs. In fact, in my opinion, the change in display that is performed when opening a formula (switching from the preview display to the mathed display) is a little distracting. But this is only my opinion.