&$titleSnippet: Label for the link representing the search result. Typically the
article title.
$result: The SearchResult object
-$terms: String of the search terms entered
+$terms: array of search terms extracted by SearchDatabase search engines
+ (may not be populated by other search engines).
$specialSearch: The SpecialSearch object
&$query: Array of query string parameters for the link representing the search
result.
&$user: user retrieving new talks messages
&$talks: array of new talks page(s)
-'UserRights': DEPRECATED since 1.26! Use UserGroupsChanged instead.
-After a user's group memberships are changed.
-&$user: User object that was changed
-$add: Array of strings corresponding to groups added
-$remove: Array of strings corresponding to groups removed
-
'UserSaveOptions': Called just before saving user preferences. Hook handlers can
either add or manipulate options, or reset one back to it's default to block
changing it. Hook handlers are also allowed to abort the process by returning