OPF official standards for EPUB eBooks http://www.idpf.org/epub/30/spec/epub30-publications.html rules for embedding video as well as audio OPF files ofereçam suporte retroativo http://idpf.org/epub/30/spec/epub30-...itles-examples page progression direction http://www.idpf.org/epub/30/spec/epub30-publications.html Bindings EPUB 3 Core Media Types http://idpf.org/epub/30/spec/epub30-...itles-examples EPUB Publications 3.0 Recommended Specification epub3 rules mediaType IDPF's site epub3 rules official standards for EPUB eBooks section 3.4.1 Package Document official standards for EPUB eBooks http://idpf.org/epub/30/spec/epub30-...itles-examples rules for embedding video as well as audio "EPUB Publications 3.0" epub3 rules official standards for EPUB eBooks http://idpf.org/epub/30/spec/epub30-...itles-examples section 4.2.4 from EPUB Publications 3.0 www.idpf.org/epub/30/spec/epub30-publications.html epub3 rules NCX EPUB Publications 3.0 Recommended Specification EPUB 3.0 specification http://idpf.org/epub/30/spec/epub30-...ec-opf-dctitle epub3 rules ePub 3.0 publications EPUB Publications 3.0 spec section 3.4.6 of EPUB Publications 3.0 properties="cover-image" EPUB Publications 3.0 spec http://idpf.org/epub/30/spec/epub30-...itles-examples section 3.4.6 of the EPUB Publications 3.0 spec http://idpf.org/epub/30/spec/epub30-...itles-examples http://idpf.org/epub/30/spec/epub30-...ec-opf-dctitle "EPUB Publications 3.0" http://idpf.org/epub/30/spec/epub30-...itles-examples EPUB 3 Publications section 4.3.2 http://www.idpf.org/epub/30/spec/epub30-publications.html EPUB Publications 3.0 section 3.4.7 are being replaced EPUB Publications 3.0 Recommended Specification http://idpf.org/epub/30/spec/epub30-...itles-examples section 4.3.2 http://idpf.org/epub/30/spec/epub30-publications.html http://idpf.org/epub/30/spec/epub30-...itles-examples http://www.idpf.org/epub/30/spec/epub30-publications.html ofereçam suporte retroativo epub3 rules EPUB Publications 3.0 section 3.4.14 EPUB 3 Publications section 4.3.2 http://idpf.org/epub/30/spec/epub30-...ec-opf-dctitle properties="cover-image" EPUB 3.0 Publications ofereçam suporte retroativo ePub 3.0 publications epub3 rules ofereçam suporte retroativo http://idpf.org/epub/30/spec/epub30-publications.html http://www.idpf.org/epub/30/spec/epub30-publications.html EPUB Publications 3.0 Recommended Specification