|
As this relates to FlightCrew, it is the xml schema that determines if an attribute is allowed or not. The vast part of validating an epub2 is done against that schema. As far as I know these schema in Flightcrew are the most recent published for epub2. So the spec for epub2 has evolved but without a proper updated schema, there is not much I can do. I will look again to see if there are newer xml schemas for epub2 that are old enough to not add or allow epub3 only language features.
|