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I tried unzipping the .xlsx file and could find some files in it. But I am not sure as to what these files contain and how they are related.

Where can I find the DOCS for creating spreadsheetML?

pnuts
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Trijit
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  • Can you clarify any further? What are you using? What .xlsx file are you talking about? I did find [this](https://msdn.microsoft.com/en-us/library/office/gg278316.aspx) and [this](https://msdn.microsoft.com/en-us/library/office/gg278320.aspx) via [Google](https://www.google.com/search?q=DOCS+for+creating+spreadsheetML&oq=DOCS+for+creating+spreadsheetML&aqs=chrome..69i57&sourceid=chrome&es_sm=93&ie=UTF-8)... – BruceWayne Oct 29 '15 at 15:29
  • what i meant was, I want to know the significance of each of the files zipped as xlsx file and how exactly the content(xml content)of these files, based on what criteria, are populated – Trijit Oct 29 '15 at 19:10

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You can find the full specification of the Open XML file formats here. The specification contains a description of the files that are contained in an Open XML file package (such as an XLSX file), their contents and relationships.

There are also a lot of great articles and tutorials about Office Open XML formats at the OpenXML Developer Blog and Eric White's Blog.

For learning Office Open XML, I would recommend starting with this series of articles and this to learn how SpreadsheetML (the XLSX file format) works.

Marek Dzikiewicz
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