MS Excel
To center worksheet titles across a range of cells, you must

Widen the columns
Select the cells containing the title text plus the range over which the title text is to be centered
Select the cells containing the title text plus the range over which the title text is to be enfettered
Format the cells with the comma style

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MS Excel
The autofill feature

Extends a sequential series of data
Applies a boarder around the selected cells
Automatically adds range of cell values
All of the listed here

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