The evolution of data in Microsoft Visio
Post-acquisition, Visio has seen its challenges, not only for the new custodians of the code base, but also for the Visio community. Microsoft has had to undertake some rationalization and integration with the extended Microsoft Office family. This has meant, for example, that developers have had to change the whole Visio user interface to use common Office elements. More latterly, this has meant changing the file structure of Visio documents to use the Open Packaging Convention (OPC) file format. The Visio community saw little improvement as far as data was concerned until Visio 2007, when the core engine was expanded at last. These features have been further enhanced since then, but they remain the cornerstone ...
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