MS Word
In order to email a Word document from within MS Word

Save the file as an email attachment
This is an impossible operation
Start Outlook and attach the file while open in Word
Office button > Send to > Mail Recipient

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MS Word
Why headers and footers used in MS -Word

To allow page headers and footers to appear on document when it is printed
To mark the starting of a page
To enhance the overall appearance of the document
To make large document more readable

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