Bug#563237: jed-extra: not obvious how to use new modes

[Guenter Milde]

JED's emulation mode can be set in /etc/jed.d/*.sl, ~/.jed/jed.rc
or via the command line option -e.

/usr/share/doc/jed/examples provides example files for the first two options.

* replace the standard emulations 'emacs', 'ide', 'cua', ... with 'vi'

* /usr/share/doc/jed/examples/jed.conf is from the upstream documentation. On
  Debian, the modified file should go to e.g. /etc/jed.d/90local.sl

Unfortunately, the man page is outdated and does not document the option -e.
However, jed --help shows it. For vi emulation, the command would be one of

  jed -e vi
  xjed -e vi
  
if you have a user config file and want to override it, combine this with
the option -n: (x)jed -n -e vi.


That said, I agree that the documentation can be improved.

Günter