External programs and resources

[Lennart Borgman]

I have not been able to find a common entrypoint for external resources from
Emacs. I would for example appreciate if there was only one place where the
path to a program like Ghostview was entered.

I would suggest that customization of things like this should be in one or
several lisp modules that could be used by other modules.

My apologies if this has already been done or discussed before.

- Lennart