The file detex.el is for GNU emacs, and will provide the commands
M-x detex and M-x delatex if it is loaded into a TeX-mode session.

The file tex-start.ml is for use by TeX82 (see man page) to allow
switching to Gosling's Emacs at a line number given on the command
line

Put tex-start.ml in /usr/lib/tex if you want to use Gosling emacs.
The default editor line in site.h calls on GNU emacs, so you should
edit this to put in the line

emacs -ltex-start -estartline %s %d 

				if you want Gosling (Unipress) Emacs.

