From the ECMA press release;
On Thursday, December 4, 2008 the Ecma General Assembly voted to approve International Standard (IS) ISO/IEC 29500 (Office Open XML) as ECMA-376 Edition 2.
Office Open XML is an open standard for word-processing documents, presentations and spreadsheets that is intended to be implemented by multiple applications on multiple platforms. A primary rationale behind the standard is to ensure the long-term preservation of documents to maintain compatibility with continuing advances in the field of information technology.
The work to standardize Office Open XML started in December 2005 in Ecma International via its Technical Committee 45 (TC45), which included representatives from Apple, Barclays Capital, BP, The British Library, Essilor, Intel, Microsoft, NextPage, Novell, Statoil, Toshiba and the United States Library of Congress.
This means that IS29500 and ECMA-376 are now aligned, so all the changes that occurred within the spec as revision one of the ECMA standard went through ISO approval are now rolled back into the original document.
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