probably break screen-scraping bots.
* (bug 26866) The 'trackback' right is no longer granted to sysops by default.
$wgUseTrackbacks is already false by default
+* (bug 17009) the hiddenStructure CSS class, a highly hackish way of at least *appearing*
+ to hide article elements, has been removed. Use the ParserFunctions extension to
+ actually remove unwanted elements from the output.
=== New features in 1.18 ===
* Added a special page, disabled by default, that allows users with the
page restrictions
* Make truncate function automatically consider length of '...' string,
since length can vary by localization.
+* (bug 28242) Make redirects generated by urls containing a local interwiki
+ prefix be a 301 instead of a 302.
+* (bug 15641) blocked administrators are now prevented from deleting or protecting
+ their own talk page; and all blocked users are more comprehensively prevented
+ from performing other actions
+* (bug 15641) Fixed positioning of permissions checks in Special:Import which
+ allowed users without the 'import' permission to import pages if they directly
+ submitted the form.
+* (bug 27893) Edit-on-doubleclick now applies only on view and purge actions;
+ no longer triggers unexpectedly on delete, history etc.
=== API changes in 1.18 ===
* (bug 26339) Throw warning when truncating an overlarge API result
* API upload errors may now return the parameter that needs to be changed and
a sessionkey to fix the error.
* (bug 28249) allow dupes in meta=allmessages&amargs
+* (bug 28263) cannot import xml with the api, when have not "import" user
+ right, but "importupload"
=== Languages updated in 1.18 ===