+group
+-----
+
+Options for group functionality.
+
+maxaliases: maximum number of aliases a group can have. Default 3. Set
+ to 0 or less to prevent aliases in a group.
+
+oohembed
+--------
+
+oEmbed endpoint for multimedia attachments (links in posts).
+
+endpoint: oohembed endpoint using http://oohembed.com/ software.
+
+search
+------
+
+Some stuff for search.
+
+type: type of search. Ignored if PostgreSQL or Sphinx are enabled. Can either
+ be 'fulltext' (default) or 'like'. The former is faster and more efficient
+ but requires the lame old MyISAM engine for MySQL. The latter
+ will work with InnoDB but could be miserably slow on large
+ systems. We'll probably add another type sometime in the future,
+ with our own indexing system (maybe like MediaWiki's).
+
+sessions
+--------
+
+Session handling.
+
+handle: boolean. Whether we should register our own PHP session-handling
+ code (using the database and memcache if enabled). Defaults to false.
+ Setting this to true makes some sense on large or multi-server
+ sites, but it probably won't hurt for smaller ones, either.
+debug: whether to output debugging info for session storage. Can help
+ with weird session bugs, sometimes. Default false.