Intersection Observer Editor’s Draft, 25 February 2016 To the extent possible under law, the editors have waived all copyright and related or neighboring rights to this work. In addition, as of 25 February 2016, the editors have made this specification available under the Open Web Foundation Agreement Version 1.0 , which is available at http://www.openwebfoundation.org/legal/the-owf-1-0-agreements