MS Excel
Tab scrolling button

Allow you to view additional sheets tabs
Allow you to view additional worksheet columns to the right
Allow you to view additional worksheet rows down
Allow you to view a different worksheet

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MS Excel
How do you delete a column?

Right click the column heading you want to delete and select delete from the shortcut menu
Select the row heading you want to delete and select Edit>Delete from the menu
Select the column heading you want to delete and select the Delete Row button on the standard toolbar
Select the column heading you want to delete and select Insert Delete from the menu

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