Using the Text Format in Table Cells
Use the text format when you want all of a cell’s content to be treated as text, even
when it’s a number. When a text format is applied to a cell, its value is displayed exactly
as you type it.
To define a text format for one or more selected cells:
Select the cell or cells.
Click Inspector in the toolbar, click the Table inspector button, and then click Format.
Choose Text from the Cell Format pop-up menu.