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Microsoft patented storing tagged text in XML

The patent is entitled “Word-processing document stored XML” and is described as follows:

“A word processor including a native XML file format is provided. 100% of the word-processor's rich formatting. There are no losses when it comes to saving documents. A published XSD file. Understanding the XML Word File Processor. The word-processing document is stored in a single XML file. In addition, the word-processor itself doesn’t include the word-processor itself.

Patent Reference

Key points:

The application was filed in December 2004, the patent was granted on August 4, 2009.
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Either I do not understand something in this life, or something really in this world (in some part of it) is somehow wrong.
There is a format fb2 , the first version of which was published in the same 2004. Not just an extensive patent application, but a full description and specification. There is a bunch of software that works with this format. The format uniquely identifies the markup of the document, it is not lost when saved, the format is stored as a single XML file, including attachments (in binary form). Why was this patent issued?

Source: https://habr.com/ru/post/66583/


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