&$revert: string that is displayed in the UI, similar to $comment.
$time: timestamp of the log entry (added in 1.12)
-'LogPageValidTypes': action being logged.
-DEPRECATED: Use $wgLogTypes
-&$type: array of strings
-
-'LogPageLogName': name of the logging page(s).
-DEPRECATED: Use $wgLogNames
-&$typeText: array of strings
-
-'LogPageLogHeader': strings used by wfMsg as a header.
-DEPRECATED: Use $wgLogHeaders
-&$headerText: array of strings
-
-'LogPageActionText': strings used by wfMsg as a header.
-DEPRECATED: Use $wgLogActions
-&$actionText: array of strings
-
'MagicWordMagicWords': When defining new magic word.
DEPRECATED: use $magicWords in a file listed in
$wgExtensionMessagesFiles instead.
'SpecialSearchProfiles': allows modification of search profiles
&$profiles: profiles, which can be modified.
+'SpecialSearchProfileForm': allows modification of search profile forms
+$search: special page object
+&$form: String: form html
+$profile: String: current search profile
+$term: String: search term
+$opts: Array: key => value of hidden options for inclusion in custom forms
+
+'SpecialSearchSetupEngine': allows passing custom data to search engine
+$search: special page object
+$profile: String: current search profile
+$engine: the search engine
+
'SpecialSearchResults': called before search result display when there
are matches
$term: string of search term