IEC 62448:2017 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 62448:2017 specifies a generic format for multimedia e-publishing employed for e-book data interchange among data preparers and publishers, satisfying a number of publishers’ requirements: revisable, extensible and heterogeneous logical structure. This fourth edition cancels and replaces the third edition, published in 2013 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) clarifying descriptions,
b) deleting redundant statements,
c) resolving mistakes and confusing terminologies.