Hello: blank cells do not occupy memory. Only when there is data or space in blank cells will they occupy memory. If you don't want to show it, you can click the column label of column C, then press ctrl+shift+ RIGHT ARROW to select all columns on the right side of column C at the same time, and then click Hide, so that you can't see it.

In fact, you filled in the border lines of columns A and B, and the cell to the right of column C does not display the border lines in the print preview.

If the right side of column C is displayed when printing, you can select columns A and B with data, set the printing area, only print the data you want, and the right side of column C is not displayed.

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