EPUB 3.4 adds a new class of "outdated" features (name subject to change). These are no longer recommended for use but also can't result in warnings like deprecated features. The expectation is that their presence will only be noted in a usage or info message.
The following features have this designation:
- font obfuscation
- the collection element
- rendition:flow and the spine overrides rendition:flow-auto, rendition:flow-paginated, rendition:flow-scrolled-continuous, and rendition:flow-scrolled-doc
- rendition:orientation and the spine overrides rendition:orientation-landscape, rendition:orientation-portrait, rendition:orientation-auto
- rendition:spread and the spine overrides rendition:spread-none, rendition:spread-landscape, rendition:spread-both, and rendition:spread-auto (note that rendition:spread-portrait remains deprecated)
- the prefixed css properties -epub-text-orientation, -epub-writing-mode, -epub-text-combine-horizontal, -epub-hyphens, -epub-line-break, -epub-text-align-last, -epub-word-break, -epub-text-emphasis-color, -epub-text-emphasis-position, -epub-text-emphasis-style, and -epub-text-underline-position
- the css text-transform property value -epub-fullwidth
EPUB 3.4 adds a new class of "outdated" features (name subject to change). These are no longer recommended for use but also can't result in warnings like deprecated features. The expectation is that their presence will only be noted in a usage or info message.
The following features have this designation: