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Link detection currently only identifies links in files with the following extensionsfile types:
Files with the DOCX extension (available in Microsoft Word 2007 and newer)
Files with the PPTX extension (available in Microsoft PowerPoint 2007 and newer)
Files with the XLSX extension (available in Microsoft Excel 2007 and newer).
Google Docs
Google Sheets
Google Slides
Supported Links
Hyperlinks: These are links to websites or documents. Hyperlinks can be http/https/ftp/ftps URLs or links to files.
In Microsoft Word, Excel, and PowerPoint files, these links are created using the Link option on the Insert tab or by right-clicking on selected text/cell and selecting Link from the shortcut menu.References to other Excel spreadsheets: In Microsoft Excel files, these are links to cells in other Microsoft Excel files. These links are made by creating a formula that references a cell or range of cells in another Microsoft Excel file. The cells are formatted similar to the following examples:
=[AnotherSpreadsheet.xlsx]SheetName!A1
='C:\Absolute\Path\To\[AnotherSpreadsheet.xlsx]SheetName'!B1
Links documents/object: In Microsoft PowerPoint files, this is content that has been imported into the presentation. This content is imported using the Object option on the Insert tab or using the Paste Special option to insert a link to a Microsoft Word Document Object.
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