-[1] - Only required for serving/generating Atom and HTML pages.
-[2] - Keep in mind this will be split into a separate Debian package
- when CGI.pm is dropped from the Perl standard library.
- Plack/PSGI, FastCGI, and mod_perl2 will all be supported.
+[1] - Optional, needed for serving/generating Atom and HTML pages
+[2] - Optional, only required for NNTP server
+[3] - Optional, needed for gzipped mbox support over HTTP
+[4] - Optional, needed for bundled HTTP and NNTP servers
+[5] - Optional, needed for standalone daemonization of HTTP+NNTP servers
+[6] - Optional, needed for public-inbox-watch Maildir watcher
+
+When installing Search::Xapian, make sure the underlying Xapian
+installation is not affected by an index corruption bug:
+
+ https://bugs.debian.org/808610
+
+For Debian 8.x (jessie), this means using Debian 8.5 or later.
+
+public-inbox will never store unregeneratable data in Xapian
+or any other search database we might use; Xapian corruption
+will not destroy critical data.