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

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MS Excel
Right clicking something in Excel:

Opens a shortcut menu listing everything you can do to the object
Selects the object
Deletes the object
Nothing the right mouse button is there for left handed people

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MS Excel
How do you insert a row?

Right-click the row heading where you want to insert the new row and select Insert from the shortcut menu
Select the row heading where you want to insert the new row and select Edit >Row from the menu
All of the listed here
Select the row heading where you want to insert the new row and click the Insert Row button on the standard toolbar

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