You can clone with
HTTPS or Subversion.
created by: @chillu (ischommer)
created at: 2012-03-07
original ticket: http://open.silverstripe.org/ticket/6897
While the current implementaion alerts you when navigating away from unsaved changes,
its likely that the help page will be used in parallel to the CMS, so should open in a new page.
Fixed in 3.1.