MS Excel
How do you select an entire column?

Select Edit > Select > Column from the menu
Hold down the Ctrl key as you click anywhere in the column
Click the column heading letter
Hold down the shift key as you click anywhere in the column

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MS Excel
Right clicking something in Excel:

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

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