I believe that AUCTeX [1] does essentially this in EMACS. It embeds a preview of each equation into the buffer, but I don't know whether it's smart enough to ha

I believe that AUCTeX [1] does essentially this in EMACS. It embeds a preview of each equation into the buffer, but I don't know whether it's smart enough to handle macros. [1] http://www.emacswiki.org/emacs/AUCTeX http://www.emacswiki.org/emacs/AUCTeX