http://www.proftpd.org is now online and contains copies of this FAQ, other documentation resources and information on the project. The documentation is being brought back into shape at the moment, the configuration on the website is now approaching where it should be but more work is required and is ongoing. There are a number of geographic mirror sites, see http://www.proftpd.org for details or try www.<isocode>.proftpd.org (ie www.uk.proftpd.org).
Writing documentation is time consuming and requires some
work but it's not actually difficult. Get the source code from CVS,
run "ShowUndocumented" in the doc directory. This will list what
needs work. Grep through the code in the looking for something like
CHECK_CONF(cmd,CONF_ROOT|CONF_VIRTUAL|CONF_ANON|CONF_GLOBAL)
to figure out where the directive is valid (server config,
<VirtualHost>, <Anonymous>, <Global> for the above example). Once you
think you understand what it does, test, play, break (if possible).
Then copy the format in Configuration.html and add the new documentation.
Once the documentation is complete run
cvs diff -uw Configuration.html > Configuration.html.patch
and submit it via the bug reporting system.