Apps for Office: Work with custom XML parts

?This sample writes user-specified text to a custom XML part that is bound to a content control within a Word 2013 document.

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Apps for Office: Work with custom XML parts

Apps for Office: Interact with Facebook APIs

?This sample task pane app for Excel shows how to log on to Facebook from an Excel 2013 task pane, and then how to retrieve some basic user data from Facebook by using the Facebook API.

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Apps for Office: Interact with Facebook APIs