I use the Programmer's File Editor (PFE) when working on my LaTeX input files
and when invoking LaTeX and dvips.
This is a LaTeX input file being edited in PFE. To see what LaTeX produces as
a result, take a look at the LaTeX page.
In memoriam...
Unfortunately, the developer of PFE has stopped with the current version 1.01
after having made certain it works with Windows 95, 98, NT, and 2000. It is
still possible to download the binaries, but I genuinely felt bad when I found
this out. I wrote my Ph.D. dissertation using PFE, for crying out loud.
Eventually, I'll have to find something else, but it's hard to imagine what that
might be...