Enhanced Carbon Emacs (ECE) plugin for Mac

From Enrico Franconi:

Enhanced Carbon Emacs is now a universal enhancement plugin for arbitrary (unix, carbon, or aqua) emacs distributions (such as Yaced, Aquamacs, CarbonEmacs Tiger, or the native darwin emacs in /usr/bin/emacs). This includes a fully customisable LaTeX editing environment based on AucTeX, RefTeX, Preview and other packages. Basically, ECE is a convenient way to properly install a large number of pre-configured useful packages for LaTeX users, which includes a hack of AUCTeX, that allows to have a more intuitive handling of the "view" command in a macintosh context (in particular, for non-pdftex users willing to preview in pdf), and to use simpdftex and dvipdfmx in a seamless way. From emacs, you can launch directly any latex process or any mac application on files or regions you are working on.