Range.Justify Method (Excel)
Rearranges the text in a range so that it fills the range evenly.
If the range isn’t large enough, Microsoft Excel displays a message telling you that text will extend below the range. If you click the OK button, justified text will replace the contents in cells that extend beyond the selected range. To prevent this message from appearing, set the DisplayAlerts property to False. After you set this property, text will always replace the contents in cells below the range.