+'ImagePageShowTOC': called when the file toc on an image page is generated
+$page: ImagePage object
+&$toc: Array of <li> strings
+
+'ImgAuthBeforeStream': executed before file is streamed to user, but only when
+ using img_auth.php
+&$title: the Title object of the file as it would appear for the upload page
+&$path: the original file and path name when img_auth was invoked by the the web
+ server
+&$name: the name only component of the file
+&$result: The location to pass back results of the hook routine (only used if
+ failed)
+ $result[0]=The index of the header message
+ $result[1]=The index of the body text message
+ $result[2 through n]=Parameters passed to body text message. Please note the
+ header message cannot receive/use parameters.
+
+'ImportHandleLogItemXMLTag': When parsing a XML tag in a log item
+$reader: XMLReader object
+$logInfo: Array of information
+Return false to stop further processing of the tag
+
+'ImportHandlePageXMLTag': When parsing a XML tag in a page
+$reader: XMLReader object
+$pageInfo: Array of information
+Return false to stop further processing of the tag
+
+'ImportHandleRevisionXMLTag': When parsing a XML tag in a page revision
+$reader: XMLReader object
+$revInfo: Array of information
+Return false to stop further processing of the tag
+
+'ImportHandleToplevelXMLTag': When parsing a top level XML tag
+$reader: XMLReader object
+Return false to stop further processing of the tag
+
+'ImportHandleUploadXMLTag': When parsing a XML tag in a file upload
+$reader: XMLReader object
+$revisionInfo: Array of information
+Return false to stop further processing of the tag
+