This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
The last link in "The sandboxed top-level navigation browsing context flag This flag prevents content from navigating their top-level browsing context and prevents content from closing their top-level browsing context." points to #sandboxClose, which used to be the last point in the list after "The close() method on Window objects should, if all the following conditions are met, close the browsing context A:" It's now a broken link.