a5e64d83_ureStatus20120119____XWiki_org__Status_as_of_2012_01_19
[Feature] Offline XWiki (use your wiki while offline and synchronize it when you get back online) [Status as of 2012/01/19] 
Was implemented as part of XEclipse (not well maintained at the moment) but not XE
Feature Status - Jan 2012 (Blog.FeatureStatus20120119) - XWiki.org
Status as of 2012/01/19