+=item publicinbox.<name>.indexlevel
+
+The indexing level for L<public-inbox-index(1)>
+
+C<basic> only requires L<DBD::SQLite(3pm)> and provides all
+NNTP functionality along with thread-awareness in the WWW
+interface.
+
+C<medium> requires L<Search::Xapian(3pm)> to provide full-text
+term search functionality in the WWW UI.
+
+C<full> also includes positional information used by Xapian to
+allow for searching for phrases using quoted text.
+(e.g. C<"looking for a complete sentence">)
+
+Default: C<full>
+
+=item publicinbox.<name>.httpbackendmax
+
+If a digit, the maximum number of parallel
+L<git-http-backend(1)> processes to allow for cloning this
+particular inbox.
+
+If an alphanumeric value starting with a lowercase alphabetic
+character is specified, the inbox will use a L</NAMED LIMITER>
+which can be shared by multiple inboxes.
+
+Default: 32 (using a default limiter shared by all inboxes)
+
+=item publicinbox.<name>.coderepo
+
+The nickname of a "coderepo" section associated with the inbox.
+May be specified more than once for M:N mapping of code repos to
+inboxes. If enabled, diff hunk headers in patch emails will
+link to the line numbers of blobs.
+
+Default: none
+
+=item publicinbox.<name>.replyto
+
+May be used to control how reply instructions in the PSGI
+interface are displayed.
+
+":none=dead inbox" may be specified to denote an inactive list
+("dead inbox" may be replaced with another phrase).
+
+A list of comma-delimited email addresses may be specified.
+This can be useful for dedicated inboxes for bot emails, but
+discussion happens on a seperate mailing list/inbox.
+
+Mirrors of existing centralized mailing lists may use ":list"
+here to redirect mail only to the configured inbox address.
+The use of ":list" is discouraged for new mailing lists, as it
+leads to centralization.
+
+Default: :all
+
+=item publicinbox.css
+
+The local path name of a CSS file for the PSGI web interface.
+May contain the attributes "media", "title" and "href" which match
+the associated attributes of the HTML <style> tag.
+"href" may be specified to point to the URL of an remote CSS file
+and the path may be "/dev/null" or any empty file.
+Multiple files may be specified and will be included in the
+order specified.
+
+=item publicinboxmda.spamcheck
+
+This may be set to C<none> to disable the use of SpamAssassin
+L<spamc(1)> for filtering spam before it is imported into git
+history. Other spam filtering backends may be supported in
+the future.
+
+Default: spamc
+