Ashish Mohta posted an interesting Microsoft Excel tip at his website that explained how to smart paste contents from Notepad into Microsoft Excel. The procedure is actually working with any kind of text editor not just Notepad.
When you normally copy paste contents into Microsoft Excel they will all be stored in the same cell [...]

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Experienced users know that Microsoft Office documents can contain hidden information that can be revealed after enabling functions to see them in Microsoft Office products. This can include hidden rows and data in Excel spreadsheets, embedded information in Powerpoint presentations or revision histories in Microsoft Word documents.
Hidden data can have severe consequences for the sender [...]

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