MS Excel
Each excel file is called a workbook because

You have to work hard to create it
It can contain text and data
It can contain many sheets including worksheets and chart sheets
It can be modified

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MS Excel
If you need to remove only the formatting done in a range (numbers and formula typed there should not be removed), you must

From Edit menu choose Clear and then Formats
From Edit menu choose Delete
Click on Remove Formatting tool on Standard Toolbar
Double click the Format Painter and then press Esc key in keyboard

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