MS Word
In MS Word, for what does ruler help ?

All of the listed here
To change page margins
To set tabs
To set indents

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MS Word
Macros are:

Large tools in Word such as mail merge
Small programs created in MS-Word to automate repetitive tasks by using VBA
Small add-on programs that are installed afterwards if you need them
Programming language that you can use to customize MS-Word

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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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