> Me, too.  I think it would be useful to have a program (script?)
> that invoked a text editor ("sam" in my case) and whenever the
> source file was modified (sam "w" command), fire up troff|proof
> or whatever (including troff macros, etc.) in a *separate* window
> to show the current formatted result.  The idea is to not
> interrupt the editing session to view the result.

i remember ages ago reading in a paper about somebody
(on the Blit?) doing that.

personally, i think it's quite nice *not* to have the visual
feedback all the time - that way i can concentrate
on the content of the text i'm creating without being
distracted by occasional display glitches.